diff --git a/src/app/Backends/LDAP.php b/src/app/Backends/LDAP.php
--- a/src/app/Backends/LDAP.php
+++ b/src/app/Backends/LDAP.php
@@ -3,6 +3,7 @@
 namespace App\Backends;
 
 use App\Domain;
+use App\Group;
 use App\User;
 
 class LDAP
@@ -213,6 +214,18 @@
         }
     }
 
+    /**
+     * Create a group in LDAP.
+     *
+     * @param \App\Group $group The group to create.
+     *
+     * @throws \Exception
+     */
+    public static function createGroup(Group $group): void
+    {
+        // TODO
+    }
+
     /**
      * Create a user in LDAP.
      *
@@ -279,7 +292,7 @@
     /**
      * Delete a domain from LDAP.
      *
-     * @param \App\Domain $domain The domain to update.
+     * @param \App\Domain $domain The domain to delete
      *
      * @throws \Exception
      */
@@ -322,10 +335,22 @@
         }
     }
 
+    /**
+     * Delete a group from LDAP.
+     *
+     * @param \App\Group $group The group to delete.
+     *
+     * @throws \Exception
+     */
+    public static function deleteGroup(Group $group): void
+    {
+        // TODO
+    }
+
     /**
      * Delete a user from LDAP.
      *
-     * @param \App\User $user The user account to update.
+     * @param \App\User $user The user account to delete.
      *
      * @throws \Exception
      */
@@ -442,6 +467,18 @@
         }
     }
 
+    /**
+     * Update a group in LDAP.
+     *
+     * @param \App\Group $group The group to update
+     *
+     * @throws \Exception
+     */
+    public static function updateGroup(Group $group): void
+    {
+        // TODO
+    }
+
     /**
      * Update a user in LDAP.
      *
diff --git a/src/app/Console/Commands/Group/AddMember.php b/src/app/Console/Commands/Group/AddMember.php
new file mode 100644
--- /dev/null
+++ b/src/app/Console/Commands/Group/AddMember.php
@@ -0,0 +1,53 @@
+<?php
+
+namespace App\Console\Commands\Group;
+
+use App\Console\Command;
+
+class AddMember extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'group:add-member {group} {member}';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = "Add a member to a group.";
+
+    /**
+     * Execute the console command.
+     *
+     * @return mixed
+     */
+    public function handle()
+    {
+        $input = $this->argument('group');
+        $member = \strtolower($this->argument('member'));
+        $group = $this->getObject(\App\Group::class, $input, 'email');
+
+        if (empty($group)) {
+            $this->error("Group {$input} does not exist.");
+            return 1;
+        }
+
+        if (in_array($member, $group->members)) {
+            $this->error("{$member}: Already exists in the group.");
+            return 1;
+        }
+
+        if ($error = Create::validateMemberEmail($member)) {
+            $this->error("{$member}: $error");
+            return 1;
+        }
+
+        // We can't modify the property indirectly, therefor array_merge()
+        $group->members = array_merge($group->members, [$member]);
+        $group->save();
+    }
+}
diff --git a/src/app/Console/Commands/Group/Create.php b/src/app/Console/Commands/Group/Create.php
new file mode 100644
--- /dev/null
+++ b/src/app/Console/Commands/Group/Create.php
@@ -0,0 +1,166 @@
+<?php
+
+namespace App\Console\Commands\Group;
+
+use App\Console\Command;
+use App\Domain;
+use App\Group;
+use App\User;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Validator;
+
+class Create extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'group:create {email} {--user=} {--member=*}';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = "Create a group.";
+
+    /**
+     * Execute the console command.
+     *
+     * @return mixed
+     */
+    public function handle()
+    {
+        $email = $this->argument('email');
+        $user = $this->option('user');
+        $members = $this->option('member');
+
+        if (empty($user)) {
+            $this->error("The --user option is required.");
+            return 1;
+        }
+
+        $owner = $this->getUser($user);
+
+        if (empty($owner)) {
+            $this->error("User {$user} does not exist.");
+            return 1;
+        }
+
+        // Validate group email address
+        foreach ($members as $i => $member) {
+            if ($error = $this->validateMemberEmail($member)) {
+                $this->error("{$member}: $error");
+                return 1;
+            }
+            if (\strtolower($member) === \strtolower($email)) {
+                $this->error("{$member}: Cannot be the same as the group address.");
+                return 1;
+            }
+        }
+
+        // Validate members addresses
+        if ($error = $this->validateGroupEmail($email, $owner)) {
+            $this->error("{$email}: $error");
+            return 1;
+        }
+
+        DB::beginTransaction();
+
+        // Create the group
+        $group = new Group();
+        $group->email = $email;
+        $group->members = $members;
+        $group->save();
+
+        $group->assignToWallet($owner->wallets->first());
+
+        DB::commit();
+
+        $this->info($group->id);
+    }
+
+    /**
+     * Validate an email address for use as a group member
+     *
+     * @param string $email Email address
+     *
+     * @return ?string Error message on validation error
+     */
+    public static function validateMemberEmail(string $email): ?string
+    {
+        $v = Validator::make(
+            ['email' => $email],
+            ['email' => [new \App\Rules\ExternalEmail()]]
+        );
+
+        if ($v->fails()) {
+            return $v->errors()->toArray()['email'][0];
+        }
+
+        return null;
+    }
+
+    /**
+     * Validate an email address for use as a group email
+     *
+     * @param string    $email Email address
+     * @param \App\User $user  The group owner
+     *
+     * @return ?string Error message on validation error
+     */
+    public static function validateGroupEmail(string $email, \App\User $user): ?string
+    {
+        if (strpos($email, '@') === false) {
+            return \trans('validation.entryinvalid', ['attribute' => 'email']);
+        }
+
+        list($login, $domain) = explode('@', \strtolower($email));
+
+        if (strlen($login) === 0 || strlen($domain) === 0) {
+            return \trans('validation.entryinvalid', ['attribute' => 'email']);
+        }
+
+        // Check if domain exists
+        $domain = Domain::where('namespace', $domain)->first();
+
+        if (empty($domain)) {
+            return \trans('validation.domaininvalid');
+        }
+
+        // Validate login part alone
+        $v = Validator::make(
+            ['email' => $login],
+            ['email' => [new \App\Rules\UserEmailLocal(!$domain->isPublic())]]
+        );
+
+        if ($v->fails()) {
+            return $v->errors()->toArray()['email'][0];
+        }
+
+        // Check if it is one of domains available to the user
+        $domains = \collect($user->domains())->pluck('namespace')->all();
+
+        if (!in_array($domain->namespace, $domains)) {
+            // return \trans('validation.entryexists', ['attribute' => 'domain']);
+            return "Domain not available.";
+        }
+
+        // Check if a user with specified address already exists
+        if (User::emailExists($email)) {
+            return \trans('validation.entryexists', ['attribute' => 'email']);
+        }
+
+        // Check if an alias with specified address already exists.
+        if (User::aliasExists($email)) {
+            return \trans('validation.entryexists', ['attribute' => 'email']);
+        }
+
+        if (Group::emailExists($email)) {
+            return \trans('validation.entryexists', ['attribute' => 'email']);
+        }
+
+        return null;
+    }
+}
diff --git a/src/app/Console/Commands/Group/Delete.php b/src/app/Console/Commands/Group/Delete.php
new file mode 100644
--- /dev/null
+++ b/src/app/Console/Commands/Group/Delete.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Console\Commands\Group;
+
+use App\Console\Command;
+
+class Delete extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'group:delete {group}';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = "Delete a group.";
+
+    /**
+     * Execute the console command.
+     *
+     * @return mixed
+     */
+    public function handle()
+    {
+        $input = $this->argument('group');
+        $group = $this->getObject(\App\Group::class, $input, 'email');
+
+        if (empty($group)) {
+            $this->error("Group {$input} does not exist.");
+            return 1;
+        }
+
+        $group->delete();
+    }
+}
diff --git a/src/app/Console/Commands/Group/Info.php b/src/app/Console/Commands/Group/Info.php
new file mode 100644
--- /dev/null
+++ b/src/app/Console/Commands/Group/Info.php
@@ -0,0 +1,48 @@
+<?php
+
+namespace App\Console\Commands\Group;
+
+use App\Console\Command;
+
+class Info extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'group:info {group}';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = "Print a group information.";
+
+    /**
+     * Execute the console command.
+     *
+     * @return mixed
+     */
+    public function handle()
+    {
+        $input = $this->argument('group');
+        $group = $this->getObject(\App\Group::class, $input, 'email');
+
+        if (empty($group)) {
+            $this->error("Group {$input} does not exist.");
+            return 1;
+        }
+
+        $this->info('Id: ' . $group->id);
+        $this->info('Email: ' . $group->email);
+        $this->info('Status: ' . $group->status);
+
+        // TODO: Print owner/wallet
+
+        foreach ($group->members as $member) {
+            $this->info('Member: ' . $member);
+        }
+    }
+}
diff --git a/src/app/Console/Commands/Group/RemoveMember.php b/src/app/Console/Commands/Group/RemoveMember.php
new file mode 100644
--- /dev/null
+++ b/src/app/Console/Commands/Group/RemoveMember.php
@@ -0,0 +1,56 @@
+<?php
+
+namespace App\Console\Commands\Group;
+
+use App\Console\Command;
+
+class RemoveMember extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'group:remove-member {group} {member}';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = "Remove a member from a group.";
+
+    /**
+     * Execute the console command.
+     *
+     * @return mixed
+     */
+    public function handle()
+    {
+        $input = $this->argument('group');
+        $member = \strtolower($this->argument('member'));
+
+        $group = $this->getObject(\App\Group::class, $input, 'email');
+
+        if (empty($group)) {
+            $this->error("Group {$input} does not exist.");
+            return 1;
+        }
+
+        $members = [];
+
+        foreach ($group->members as $m) {
+            if ($m !== $member) {
+                $members[] = $m;
+            }
+        }
+
+        if (count($members) == count($group->members)) {
+            $this->error("Member {$member} not found in the group.");
+            return 1;
+        }
+
+        $group->members = $members;
+        $group->save();
+    }
+}
diff --git a/src/app/Group.php b/src/app/Group.php
new file mode 100644
--- /dev/null
+++ b/src/app/Group.php
@@ -0,0 +1,280 @@
+<?php
+
+namespace App;
+
+use App\Wallet;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+/**
+ * The eloquent definition of a Group.
+ *
+ * @property int    $id      The group identifier
+ * @property string $email   An email address
+ * @property string $members A comma-separated list of email addresses
+ * @property int    $status  The group status
+ */
+class Group extends Model
+{
+    use SoftDeletes;
+
+    // we've simply never heard of this domain
+    public const STATUS_NEW        = 1 << 0;
+    // it's been activated
+    public const STATUS_ACTIVE     = 1 << 1;
+    // domain has been suspended.
+    public const STATUS_SUSPENDED  = 1 << 2;
+    // domain has been deleted
+    public const STATUS_DELETED    = 1 << 3;
+    // domain has been created in LDAP
+    public const STATUS_LDAP_READY = 1 << 4;
+
+    public $incrementing = false;
+
+    protected $keyType = 'bigint';
+
+    protected $fillable = [
+        'email',
+        'status',
+        'members'
+    ];
+
+    /**
+     * Assign the group to a wallet.
+     *
+     * @param \App\Wallet $wallet The wallet
+     *
+     * @return \App\Group Self
+     * @throws \Exception
+     */
+    public function assignToWallet(Wallet $wallet): Group
+    {
+        if (empty($this->id)) {
+            throw new \Exception("Group not yet exists");
+        }
+
+        if (!empty($this->entitlement)) {
+            throw new \Exception("Group already assigned to a wallet");
+        }
+
+        $sku = \App\Sku::where('title', 'group')->first();
+        $exists = $wallet->entitlements()->where('sku_id', $sku->id)->count();
+
+        \App\Entitlement::create([
+            'wallet_id' => $wallet->id,
+            'sku_id' => $sku->id,
+            'cost' => $exists >= $sku->units_free ? $sku->cost : 0,
+            'entitleable_id' => $this->id,
+            'entitleable_type' => Group::class
+        ]);
+
+        return $this;
+    }
+
+    /**
+     * Find whether an email address exists as a group (including deleted groups).
+     *
+     * @param string $email        Email address
+     * @param bool   $return_group Return Group instance instead of boolean
+     *
+     * @return \App\Group|bool True or Group model object if found, False otherwise
+     */
+    public static function emailExists(string $email, bool $return_group = false)
+    {
+        if (strpos($email, '@') === false) {
+            return false;
+        }
+
+        $email = \strtolower($email);
+
+        $group = self::withTrashed()->where('email', $email)->first();
+
+        if ($group) {
+            return $return_group ? $group : true;
+        }
+
+        return false;
+    }
+
+    /**
+     * The group entitlement.
+     *
+     * @return \Illuminate\Database\Eloquent\Relations\MorphOne
+     */
+    public function entitlement()
+    {
+        return $this->morphOne('App\Entitlement', 'entitleable');
+    }
+
+    /**
+     * Group members propert accessor. Converts internal comma-separated list into an array
+     *
+     * @param string $members Comma-separated list of email addresses
+     *
+     * @return array Email addresses of the group members, as an array
+     */
+    public function getMembersAttribute($members): array
+    {
+        return $members ? explode(',', $members) : [];
+    }
+
+    /**
+     * Returns whether this domain is active.
+     *
+     * @return bool
+     */
+    public function isActive(): bool
+    {
+        return ($this->status & self::STATUS_ACTIVE) > 0;
+    }
+
+    /**
+     * Returns whether this domain is deleted.
+     *
+     * @return bool
+     */
+    public function isDeleted(): bool
+    {
+        return ($this->status & self::STATUS_DELETED) > 0;
+    }
+
+    /**
+     * Returns whether this domain is new.
+     *
+     * @return bool
+     */
+    public function isNew(): bool
+    {
+        return ($this->status & self::STATUS_NEW) > 0;
+    }
+
+    /**
+     * Returns whether this domain is registered in LDAP.
+     *
+     * @return bool
+     */
+    public function isLdapReady(): bool
+    {
+        return ($this->status & self::STATUS_LDAP_READY) > 0;
+    }
+
+    /**
+     * Returns whether this domain is suspended.
+     *
+     * @return bool
+     */
+    public function isSuspended(): bool
+    {
+        return ($this->status & self::STATUS_SUSPENDED) > 0;
+    }
+
+    /**
+     * Ensure the email is appropriately cased.
+     *
+     * @param string $email Group email address
+     */
+    public function setEmailAttribute(string $email)
+    {
+        $this->attributes['email'] = strtolower($email);
+    }
+
+    /**
+     * Ensure the members are apropriately formatted.
+     *
+     * @param array $members Email addresses of the group members
+     */
+    public function setMembersAttribute(array $members): void
+    {
+        $members = array_filter(array_map('strtolower', $members));
+        $this->attributes['members'] = implode(',', $members);
+    }
+
+    /**
+     * Group status mutator
+     *
+     * @throws \Exception
+     */
+    public function setStatusAttribute($status)
+    {
+        $new_status = 0;
+
+        $allowed_values = [
+            self::STATUS_NEW,
+            self::STATUS_ACTIVE,
+            self::STATUS_SUSPENDED,
+            self::STATUS_DELETED,
+            self::STATUS_LDAP_READY,
+        ];
+
+        foreach ($allowed_values as $value) {
+            if ($status & $value) {
+                $new_status |= $value;
+                $status ^= $value;
+            }
+        }
+
+        if ($status > 0) {
+            throw new \Exception("Invalid group status: {$status}");
+        }
+
+        if ($new_status & self::STATUS_DELETED && $new_status & self::STATUS_ACTIVE) {
+            $new_status ^= self::STATUS_ACTIVE;
+        }
+
+        if ($new_status & self::STATUS_SUSPENDED && $new_status & self::STATUS_ACTIVE) {
+            $new_status ^= self::STATUS_ACTIVE;
+        }
+
+        // if the domain is now active, it is not new anymore.
+        if ($new_status & self::STATUS_ACTIVE && $new_status & self::STATUS_NEW) {
+            $new_status ^= self::STATUS_NEW;
+        }
+
+        $this->attributes['status'] = $new_status;
+    }
+
+    /**
+     * Suspend this group.
+     *
+     * @return void
+     */
+    public function suspend(): void
+    {
+        if ($this->isSuspended()) {
+            return;
+        }
+
+        $this->status |= Group::STATUS_SUSPENDED;
+        $this->save();
+    }
+
+    /**
+     * Unsuspend this group.
+     *
+     * @return void
+     */
+    public function unsuspend(): void
+    {
+        if (!$this->isSuspended()) {
+            return;
+        }
+
+        $this->status ^= Group::STATUS_SUSPENDED;
+        $this->status |= Group::STATUS_ACTIVE;
+
+        $this->save();
+    }
+
+    /**
+     * Returns the wallet by which the group is controlled
+     *
+     * @return \App\Wallet A wallet object
+     */
+    public function wallet(): ?Wallet
+    {
+        // Note: Not all domains have a entitlement/wallet
+        $entitlement = $this->entitlement()->withTrashed()->first();
+
+        return $entitlement ? $entitlement->wallet : null;
+    }
+}
diff --git a/src/app/Handlers/Group.php b/src/app/Handlers/Group.php
new file mode 100644
--- /dev/null
+++ b/src/app/Handlers/Group.php
@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Handlers;
+
+class Group extends \App\Handlers\Base
+{
+    /**
+     * The entitleable class for this handler.
+     *
+     * @return string
+     */
+    public static function entitleableClass(): string
+    {
+        return \App\Group::class;
+    }
+}
diff --git a/src/app/Http/Controllers/API/SignupController.php b/src/app/Http/Controllers/API/SignupController.php
--- a/src/app/Http/Controllers/API/SignupController.php
+++ b/src/app/Http/Controllers/API/SignupController.php
@@ -371,7 +371,7 @@
 
         // Check if user with specified login already exists
         $email = $login . '@' . $domain;
-        if (User::emailExists($email) || User::aliasExists($email)) {
+        if (User::emailExists($email) || User::aliasExists($email) || \App\Group::emailExists($email)) {
             return ['login' => \trans('validation.loginexists')];
         }
 
diff --git a/src/app/Http/Controllers/API/V4/UsersController.php b/src/app/Http/Controllers/API/V4/UsersController.php
--- a/src/app/Http/Controllers/API/V4/UsersController.php
+++ b/src/app/Http/Controllers/API/V4/UsersController.php
@@ -4,6 +4,7 @@
 
 use App\Http\Controllers\Controller;
 use App\Domain;
+use App\Group;
 use App\Rules\UserEmailDomain;
 use App\Rules\UserEmailLocal;
 use App\Sku;
@@ -30,10 +31,10 @@
     ];
 
     /**
-     * On user create it is filled with a user object to force-delete
+     * On user create it is filled with a user or group object to force-delete
      * before the creation of a new user record is possible.
      *
-     * @var \App\User|null
+     * @var \App\User|\App\Group|null
      */
     protected $deleteBeforeCreate;
 
@@ -673,10 +674,10 @@
     /**
      * Email address validation for use as a user mailbox (login).
      *
-     * @param string     $email   Email address
-     * @param \App\User  $user    The account owner
-     * @param ?\App\User $deleted Filled with an instance of a deleted user with
-     *                            the specified email address, if exists
+     * @param string                    $email   Email address
+     * @param \App\User                 $user    The account owner
+     * @param null|\App\User|\App\Group $deleted Filled with an instance of a deleted user or group
+     *                                           with the specified email address, if exists
      *
      * @return ?string Error message on validation error
      */
@@ -734,6 +735,17 @@
             return \trans('validation.entryexists', ['attribute' => 'email']);
         }
 
+        // Check if a group with specified address already exists
+        if ($existing_group = Group::emailExists($email, true)) {
+            // If this is a deleted group in the same custom domain
+            // we'll force delete it before
+            if (!$domain->isPublic() && $existing_group->trashed()) {
+                $deleted = $existing_group;
+            } else {
+                return \trans('validation.entryexists', ['attribute' => 'email']);
+            }
+        }
+
         return null;
     }
 
@@ -798,6 +810,11 @@
             }
         }
 
+        // Check if a group with specified address already exists
+        if (Group::emailExists($email)) {
+            return \trans('validation.entryexists', ['attribute' => 'alias']);
+        }
+
         return null;
     }
 }
diff --git a/src/app/Jobs/DomainJob.php b/src/app/Jobs/DomainJob.php
--- a/src/app/Jobs/DomainJob.php
+++ b/src/app/Jobs/DomainJob.php
@@ -31,7 +31,7 @@
     /**
      * Create a new job instance.
      *
-     * @param int $domainId The ID for the user to create.
+     * @param int $domainId The ID for the domain to create.
      *
      * @return void
      */
diff --git a/src/app/Jobs/Group/CreateJob.php b/src/app/Jobs/Group/CreateJob.php
new file mode 100644
--- /dev/null
+++ b/src/app/Jobs/Group/CreateJob.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Jobs\Group;
+
+use App\Jobs\GroupJob;
+
+class CreateJob extends GroupJob
+{
+    /**
+     * Execute the job.
+     *
+     * @return void
+     */
+    public function handle()
+    {
+        $group = $this->getGroup();
+
+        if (!$group->isLdapReady()) {
+            \App\Backends\LDAP::createGroup($group);
+
+            $group->status |= \App\Group::STATUS_LDAP_READY;
+            $group->save();
+        }
+    }
+}
diff --git a/src/app/Jobs/Group/DeleteJob.php b/src/app/Jobs/Group/DeleteJob.php
new file mode 100644
--- /dev/null
+++ b/src/app/Jobs/Group/DeleteJob.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Jobs\Group;
+
+use App\Jobs\GroupJob;
+
+class DeleteJob extends GroupJob
+{
+    /**
+     * Execute the job.
+     *
+     * @return void
+     */
+    public function handle()
+    {
+        $group = $this->getGroup();
+
+        // sanity checks
+        if ($group->isDeleted()) {
+            $this->fail(new \Exception("Group {$this->groupId} is already marked as deleted."));
+            return;
+        }
+
+        \App\Backends\LDAP::deleteGroup($group);
+
+        $group->status |= \App\Group::STATUS_DELETED;
+
+        if ($group->isLdapReady()) {
+            $group->status ^= \App\Group::STATUS_LDAP_READY;
+        }
+
+        $group->save();
+    }
+}
diff --git a/src/app/Jobs/Group/UpdateJob.php b/src/app/Jobs/Group/UpdateJob.php
new file mode 100644
--- /dev/null
+++ b/src/app/Jobs/Group/UpdateJob.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Jobs\Group;
+
+use App\Jobs\GroupJob;
+
+class UpdateJob extends GroupJob
+{
+    /**
+     * Execute the job.
+     *
+     * @return void
+     */
+    public function handle()
+    {
+        $group = $this->getGroup();
+
+        if (!$group->isLdapReady()) {
+            $this->delete();
+            return;
+        }
+
+        \App\Backends\LDAP::updateGroup($group);
+    }
+}
diff --git a/src/app/Jobs/GroupJob.php b/src/app/Jobs/GroupJob.php
new file mode 100644
--- /dev/null
+++ b/src/app/Jobs/GroupJob.php
@@ -0,0 +1,66 @@
+<?php
+
+namespace App\Jobs;
+
+/**
+ * The abstract \App\Jobs\GroupJob implements the logic needed for all dispatchable Jobs related to
+ * \App\Group objects.
+ *
+ * ```php
+ * $job = new \App\Jobs\Group\CreateJob($groupId);
+ * $job->handle();
+ * ```
+ */
+abstract class GroupJob extends CommonJob
+{
+    /**
+     * The ID for the \App\Group. This is the shortest globally unique identifier and saves Redis space
+     * compared to a serialized version of the complete \App\Group object.
+     *
+     * @var int
+     */
+    protected $groupId;
+
+    /**
+     * The \App\Group email property, for legibility in the queue management.
+     *
+     * @var string
+     */
+    protected $groupEmail;
+
+    /**
+     * Create a new job instance.
+     *
+     * @param int $groupId The ID for the group to create.
+     *
+     * @return void
+     */
+    public function __construct(int $groupId)
+    {
+        $this->groupId = $groupId;
+
+        $group = $this->getGroup();
+
+        if ($group) {
+            $this->groupEmail = $group->email;
+        }
+    }
+
+    /**
+     * Get the \App\Group entry associated with this job.
+     *
+     * @return \App\Group|null
+     *
+     * @throws \Exception
+     */
+    protected function getGroup()
+    {
+        $group = \App\Group::withTrashed()->find($this->groupId);
+
+        if (!$group) {
+            $this->fail(new \Exception("Group {$this->groupId} could not be found in the database."));
+        }
+
+        return $group;
+    }
+}
diff --git a/src/app/Observers/GroupObserver.php b/src/app/Observers/GroupObserver.php
new file mode 100644
--- /dev/null
+++ b/src/app/Observers/GroupObserver.php
@@ -0,0 +1,105 @@
+<?php
+
+namespace App\Observers;
+
+use App\Group;
+use Illuminate\Support\Facades\DB;
+
+class GroupObserver
+{
+    /**
+     * Handle the group "created" event.
+     *
+     * @param \App\Group $group The group
+     *
+     * @return void
+     */
+    public function creating(Group $group): void
+    {
+        while (true) {
+            $allegedly_unique = \App\Utils::uuidInt();
+            if (!Group::find($allegedly_unique)) {
+                $group->{$group->getKeyName()} = $allegedly_unique;
+                break;
+            }
+        }
+
+        $group->status |= Group::STATUS_NEW;
+    }
+
+    /**
+     * Handle the group "created" event.
+     *
+     * @param \App\Group $group The group
+     *
+     * @return void
+     */
+    public function created(Group $group)
+    {
+        \App\Jobs\Group\CreateJob::dispatch($group->id);
+    }
+
+    /**
+     * Handle the group "deleting" event.
+     *
+     * @param \App\Group $group The group
+     *
+     * @return void
+     */
+    public function deleting(Group $group)
+    {
+        // Entitlements do not have referential integrity on the entitled object, so this is our
+        // way of doing an onDelete('cascade') without the foreign key.
+        \App\Entitlement::where('entitleable_id', $group->id)
+            ->where('entitleable_type', Group::class)
+            ->delete();
+    }
+
+    /**
+     * Handle the group "deleted" event.
+     *
+     * @param \App\Group $group The group
+     *
+     * @return void
+     */
+    public function deleted(Group $group)
+    {
+        \App\Jobs\Group\DeleteJob::dispatch($group->id);
+    }
+
+    /**
+     * Handle the group "updated" event.
+     *
+     * @param \App\Group $group The group
+     *
+     * @return void
+     */
+    public function updated(Group $group)
+    {
+        \App\Jobs\Group\UpdateJob::dispatch($group->id);
+    }
+
+    /**
+     * Handle the group "restored" event.
+     *
+     * @param \App\Group $group The group
+     *
+     * @return void
+     */
+    public function restored(Group $group)
+    {
+        //
+    }
+
+    /**
+     * Handle the group "force deleted" event.
+     *
+     * @param \App\Group $group The group
+     *
+     * @return void
+     */
+    public function forceDeleted(Group $group)
+    {
+        //
+    }
+}
diff --git a/src/app/Observers/UserObserver.php b/src/app/Observers/UserObserver.php
--- a/src/app/Observers/UserObserver.php
+++ b/src/app/Observers/UserObserver.php
@@ -4,6 +4,7 @@
 
 use App\Entitlement;
 use App\Domain;
+use App\Group;
 use App\Transaction;
 use App\User;
 use App\Wallet;
@@ -132,6 +133,7 @@
         $assignments = Entitlement::whereIn('wallet_id', $wallets)->get();
         $users = [];
         $domains = [];
+        $groups = [];
         $entitlements = [];
 
         foreach ($assignments as $entitlement) {
@@ -139,30 +141,35 @@
                 $domains[] = $entitlement->entitleable_id;
             } elseif ($entitlement->entitleable_type == User::class && $entitlement->entitleable_id != $user->id) {
                 $users[] = $entitlement->entitleable_id;
+            } elseif ($entitlement->entitleable_type == Group::class) {
+                $groups[] = $entitlement->entitleable_id;
             } else {
-                $entitlements[] = $entitlement->id;
+                $entitlements[] = $entitlement;
             }
         }
 
-        $users = array_unique($users);
-        $domains = array_unique($domains);
-
         // Domains/users/entitlements need to be deleted one by one to make sure
         // events are fired and observers can do the proper cleanup.
         if (!empty($users)) {
-            foreach (User::whereIn('id', $users)->get() as $_user) {
+            foreach (User::whereIn('id', array_unique($users))->get() as $_user) {
                 $_user->delete();
             }
         }
 
         if (!empty($domains)) {
-            foreach (Domain::whereIn('id', $domains)->get() as $_domain) {
+            foreach (Domain::whereIn('id', array_unique($domains))->get() as $_domain) {
                 $_domain->delete();
             }
         }
 
-        if (!empty($entitlements)) {
-            Entitlement::whereIn('id', $entitlements)->delete();
+        if (!empty($groups)) {
+            foreach (Group::whereIn('id', array_unique($groups))->get() as $_group) {
+                $_group->delete();
+            }
+        }
+
+        foreach ($entitlements as $entitlement) {
+            $entitlement->delete();
         }
 
         // FIXME: What do we do with user wallets?
@@ -186,6 +193,7 @@
         $assignments = Entitlement::withTrashed()->whereIn('wallet_id', $wallets)->get();
         $entitlements = [];
         $domains = [];
+        $groups = [];
         $users = [];
 
         foreach ($assignments as $entitlement) {
@@ -198,12 +206,11 @@
                 && $entitlement->entitleable_id != $user->id
             ) {
                 $users[] = $entitlement->entitleable_id;
+            } elseif ($entitlement->entitleable_type == Group::class) {
+                $groups[] = $entitlement->entitleable_id;
             }
         }
 
-        $users = array_unique($users);
-        $domains = array_unique($domains);
-
         // Remove the user "direct" entitlements explicitely, if they belong to another
         // user's wallet they will not be removed by the wallets foreign key cascade
         Entitlement::withTrashed()
@@ -213,14 +220,19 @@
 
         // Users need to be deleted one by one to make sure observers can do the proper cleanup.
         if (!empty($users)) {
-            foreach (User::withTrashed()->whereIn('id', $users)->get() as $_user) {
+            foreach (User::withTrashed()->whereIn('id', array_unique($users))->get() as $_user) {
                 $_user->forceDelete();
             }
         }
 
         // Domains can be just removed
         if (!empty($domains)) {
-            Domain::withTrashed()->whereIn('id', $domains)->forceDelete();
+            Domain::withTrashed()->whereIn('id', array_unique($domains))->forceDelete();
+        }
+
+        // Groups can be just removed
+        if (!empty($groups)) {
+            Group::withTrashed()->whereIn('id', array_unique($groups))->forceDelete();
         }
 
         // Remove transactions, they also have no foreign key constraint
diff --git a/src/app/Providers/AppServiceProvider.php b/src/app/Providers/AppServiceProvider.php
--- a/src/app/Providers/AppServiceProvider.php
+++ b/src/app/Providers/AppServiceProvider.php
@@ -29,6 +29,7 @@
         \App\Discount::observe(\App\Observers\DiscountObserver::class);
         \App\Domain::observe(\App\Observers\DomainObserver::class);
         \App\Entitlement::observe(\App\Observers\EntitlementObserver::class);
+        \App\Group::observe(\App\Observers\GroupObserver::class);
         \App\Package::observe(\App\Observers\PackageObserver::class);
         \App\PackageSku::observe(\App\Observers\PackageSkuObserver::class);
         \App\Plan::observe(\App\Observers\PlanObserver::class);
diff --git a/src/database/migrations/2020_12_28_140000_create_groups_table.php b/src/database/migrations/2020_12_28_140000_create_groups_table.php
new file mode 100644
--- /dev/null
+++ b/src/database/migrations/2020_12_28_140000_create_groups_table.php
@@ -0,0 +1,55 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+// phpcs:ignore
+class CreateGroupsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create(
+            'groups',
+            function (Blueprint $table) {
+                $table->bigInteger('id');
+                $table->string('email')->unique();
+                $table->text('members')->nullable();
+                $table->smallInteger('status');
+
+                $table->timestamps();
+                $table->softDeletes();
+
+                $table->primary('id');
+            }
+        );
+
+        if (!\App\Sku::where('title', 'group')->first()) {
+            \App\Sku::create([
+                'title' => 'group',
+                'name' => 'Group',
+                'description' => 'Distribution list',
+                'cost' => 0,
+                'units_free' => 0,
+                'period' => 'monthly',
+                'handler_class' => 'App\Handlers\Group',
+                'active' => true,
+            ]);
+        }
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('groups');
+    }
+}
diff --git a/src/database/seeds/local/SkuSeeder.php b/src/database/seeds/local/SkuSeeder.php
--- a/src/database/seeds/local/SkuSeeder.php
+++ b/src/database/seeds/local/SkuSeeder.php
@@ -183,5 +183,21 @@
                 ]
             );
         }
+
+        // Check existence because migration might have added this already
+        if (!\App\Sku::where('title', 'group')->first()) {
+            Sku::create(
+                [
+                    'title' => 'group',
+                    'name' => 'Group',
+                    'description' => 'Distribution list',
+                    'cost' => 0,
+                    'units_free' => 0,
+                    'period' => 'monthly',
+                    'handler_class' => 'App\Handlers\Group',
+                    'active' => true,
+                ]
+            );
+        }
     }
 }
diff --git a/src/database/seeds/production/SkuSeeder.php b/src/database/seeds/production/SkuSeeder.php
--- a/src/database/seeds/production/SkuSeeder.php
+++ b/src/database/seeds/production/SkuSeeder.php
@@ -183,5 +183,21 @@
                 ]
             );
         }
+
+        // Check existence because migration might have added this already
+        if (!\App\Sku::where('title', 'group')->first()) {
+            Sku::create(
+                [
+                    'title' => 'group',
+                    'name' => 'Group',
+                    'description' => 'Distribution list',
+                    'cost' => 0,
+                    'units_free' => 0,
+                    'period' => 'monthly',
+                    'handler_class' => 'App\Handlers\Group',
+                    'active' => true,
+                ]
+            );
+        }
     }
 }
diff --git a/src/tests/Feature/Backends/LDAPTest.php b/src/tests/Feature/Backends/LDAPTest.php
--- a/src/tests/Feature/Backends/LDAPTest.php
+++ b/src/tests/Feature/Backends/LDAPTest.php
@@ -109,6 +109,16 @@
         $this->assertSame(null, LDAP::getDomain($domain->namespace));
     }
 
+    /**
+     * Test creating/updating/deleting a group record
+     *
+     * @group ldap
+     */
+    public function testGroup(): void
+    {
+        $this->markTestIncomplete();
+    }
+
     /**
      * Test creating/editing/deleting a user record
      *
diff --git a/src/tests/Feature/Console/Group/AddMemberTest.php b/src/tests/Feature/Console/Group/AddMemberTest.php
new file mode 100644
--- /dev/null
+++ b/src/tests/Feature/Console/Group/AddMemberTest.php
@@ -0,0 +1,81 @@
+<?php
+
+namespace Tests\Feature\Console\Group;
+
+use App\Group;
+use Illuminate\Support\Facades\Queue;
+use Tests\TestCase;
+
+class AddMemberTest extends TestCase
+{
+    /**
+     * {@inheritDoc}
+     */
+    public function setUp(): void
+    {
+        parent::setUp();
+
+        $this->deleteTestGroup('group-test@kolabnow.com');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function tearDown(): void
+    {
+        $this->deleteTestGroup('group-test@kolabnow.com');
+
+        parent::tearDown();
+    }
+
+    /**
+     * Test command runs
+     */
+    public function testHandle(): void
+    {
+        Queue::fake();
+
+        // Warning: We're not using artisan() here, as this will not
+        // allow us to test "empty output" cases
+
+        // Non-existing group
+        $code = \Artisan::call("group:add-member test@group.com member@group.com");
+        $output = trim(\Artisan::output());
+
+        $this->assertSame(1, $code);
+        $this->assertSame("Group test@group.com does not exist.", $output);
+
+        $group = Group::create(['email' => 'group-test@kolabnow.com']);
+
+        // Existing group, invalid member
+        $code = \Artisan::call("group:add-member {$group->email} member");
+        $output = trim(\Artisan::output());
+
+        $this->assertSame(1, $code);
+        $this->assertSame("member: The specified email address is invalid.", $output);
+
+        // Existing group
+        $code = \Artisan::call("group:add-member {$group->email} member@gmail.com");
+        $output = trim(\Artisan::output());
+
+        $this->assertSame(0, $code);
+        $this->assertSame('', $output);
+        $this->assertSame(['member@gmail.com'], $group->refresh()->members);
+
+        // Existing group
+        $code = \Artisan::call("group:add-member {$group->email} member2@gmail.com");
+        $output = trim(\Artisan::output());
+
+        $this->assertSame(0, $code);
+        $this->assertSame('', $output);
+        $this->assertSame(['member@gmail.com', 'member2@gmail.com'], $group->refresh()->members);
+
+        // Add a member that already exists
+        $code = \Artisan::call("group:add-member {$group->email} member@gmail.com");
+        $output = trim(\Artisan::output());
+
+        $this->assertSame(1, $code);
+        $this->assertSame("member@gmail.com: Already exists in the group.", $output);
+        $this->assertSame(['member@gmail.com', 'member2@gmail.com'], $group->refresh()->members);
+    }
+}
diff --git a/src/tests/Feature/Console/Group/CreateTest.php b/src/tests/Feature/Console/Group/CreateTest.php
new file mode 100644
--- /dev/null
+++ b/src/tests/Feature/Console/Group/CreateTest.php
@@ -0,0 +1,112 @@
+<?php
+
+namespace Tests\Feature\Console\Group;
+
+use App\Group;
+use Illuminate\Support\Facades\Queue;
+use Tests\TestCase;
+
+class CreateTest extends TestCase
+{
+    /**
+     * {@inheritDoc}
+     */
+    public function setUp(): void
+    {
+        parent::setUp();
+
+        $this->deleteTestGroup('group-test@kolabnow.com');
+        $this->deleteTestGroup('group-testm@kolabnow.com');
+        $this->deleteTestUser('group-owner@kolabnow.com');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function tearDown(): void
+    {
+        $this->deleteTestGroup('group-test@kolabnow.com');
+        $this->deleteTestGroup('group-testm@kolabnow.com');
+        $this->deleteTestUser('group-owner@kolabnow.com');
+
+        parent::tearDown();
+    }
+
+    /**
+     * Test command runs
+     */
+    public function testHandle(): void
+    {
+        Queue::fake();
+
+        // Warning: We're not using artisan() here, as this will not
+        // allow us to test "empty output" cases
+
+        // Missing group owner argument
+        $code = \Artisan::call("group:create group-test@kolabnow.com");
+        $output = trim(\Artisan::output());
+        $this->assertSame(1, $code);
+        $this->assertSame("The --user option is required.", $output);
+
+        // Invalid group owner argument
+        $code = \Artisan::call("group:create group-test@kolabnow.com --user=nonexisting@nonexisting.org");
+        $output = trim(\Artisan::output());
+        $this->assertSame(1, $code);
+        $this->assertSame("User nonexisting@nonexisting.org does not exist.", $output);
+
+        $user = $this->getTestUser('group-owner@kolabnow.com');
+
+        // Domain not available
+        $code = \Artisan::call("group:create testgroup@kolab.org --user={$user->id}");
+        $output = trim(\Artisan::output());
+        $this->assertSame(1, $code);
+        $this->assertSame("testgroup@kolab.org: Domain not available.", $output);
+
+        // Existing email
+        $code = \Artisan::call("group:create jack@kolab.org --user=john@kolab.org");
+        $output = trim(\Artisan::output());
+        $this->assertSame(1, $code);
+        $this->assertSame("jack@kolab.org: The specified email is not available.", $output);
+
+        // Existing email (of a user alias)
+        $code = \Artisan::call("group:create jack.daniels@kolab.org --user=john@kolab.org");
+        $output = trim(\Artisan::output());
+        $this->assertSame(1, $code);
+        $this->assertSame("jack.daniels@kolab.org: The specified email is not available.", $output);
+
+        // Create a group without members
+        $code = \Artisan::call("group:create group-test@kolabnow.com --user={$user->email}");
+        $output = trim(\Artisan::output());
+        $group = Group::where('email', 'group-test@kolabnow.com')->first();
+
+        $this->assertSame(0, $code);
+        $this->assertEquals($group->id, $output);
+        $this->assertSame('group-test@kolabnow.com', $group->email);
+        $this->assertSame([], $group->members);
+        $this->assertSame($user->wallets->first()->id, $group->entitlement->wallet_id);
+
+        // Existing email (of a group)
+        $code = \Artisan::call("group:create group-test@kolabnow.com --user={$user->email}");
+        $output = trim(\Artisan::output());
+        $this->assertSame(1, $code);
+        $this->assertSame("group-test@kolabnow.com: The specified email is not available.", $output);
+
+        // Invalid member
+        $code = \Artisan::call("group:create group-testm@kolabnow.com --user={$user->email} --member=invalid");
+        $output = trim(\Artisan::output());
+        $this->assertSame(1, $code);
+        $this->assertSame("invalid: The specified email address is invalid.", $output);
+
+        // Valid members
+        $code = \Artisan::call(
+            "group:create group-testm@kolabnow.com --user={$user->email}"
+            . " --member=member1@kolabnow.com --member=member2@gmail.com"
+        );
+        $output = trim(\Artisan::output());
+        $group = Group::where('email', 'group-testm@kolabnow.com')->first();
+        $this->assertSame(0, $code);
+        $this->assertEquals($group->id, $output);
+        $this->assertSame('group-testm@kolabnow.com', $group->email);
+        $this->assertSame(['member1@kolabnow.com', 'member2@gmail.com'], $group->members);
+    }
+}
diff --git a/src/tests/Feature/Console/Group/DeleteTest.php b/src/tests/Feature/Console/Group/DeleteTest.php
new file mode 100644
--- /dev/null
+++ b/src/tests/Feature/Console/Group/DeleteTest.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace Tests\Feature\Console\Group;
+
+use App\Group;
+use Illuminate\Support\Facades\Queue;
+use Tests\TestCase;
+
+class DeleteTest extends TestCase
+{
+    /**
+     * {@inheritDoc}
+     */
+    public function setUp(): void
+    {
+        parent::setUp();
+
+        $this->deleteTestGroup('group-test@kolabnow.com');
+        $this->deleteTestUser('group-owner@kolabnow.com');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function tearDown(): void
+    {
+        $this->deleteTestGroup('group-test@kolabnow.com');
+        $this->deleteTestUser('group-owner@kolabnow.com');
+
+        parent::tearDown();
+    }
+
+    /**
+     * Test command runs
+     */
+    public function testHandle(): void
+    {
+        Queue::fake();
+
+        // Warning: We're not using artisan() here, as this will not
+        // allow us to test "empty output" cases
+
+        // Non-existing group
+        $code = \Artisan::call("group:delete test@group.com");
+        $output = trim(\Artisan::output());
+
+        $this->assertSame(1, $code);
+        $this->assertSame("Group test@group.com does not exist.", $output);
+
+        $user = $this->getTestUser('group-owner@kolabnow.com');
+        $group = $this->getTestGroup('group-test@kolabnow.com');
+
+        // Existing group
+        $code = \Artisan::call("group:delete {$group->email}");
+        $output = trim(\Artisan::output());
+
+        $this->assertSame(0, $code);
+        $this->assertSame('', $output);
+        $this->assertTrue($group->refresh()->trashed());
+    }
+}
diff --git a/src/tests/Feature/Console/Group/InfoTest.php b/src/tests/Feature/Console/Group/InfoTest.php
new file mode 100644
--- /dev/null
+++ b/src/tests/Feature/Console/Group/InfoTest.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace Tests\Feature\Console\Group;
+
+use App\Group;
+use Tests\TestCase;
+
+class InfoTest extends TestCase
+{
+    /**
+     * {@inheritDoc}
+     */
+    public function setUp(): void
+    {
+        parent::setUp();
+
+        $this->deleteTestGroup('group-test@kolabnow.com');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function tearDown(): void
+    {
+        $this->deleteTestGroup('group-test@kolabnow.com');
+
+        parent::tearDown();
+    }
+
+    /**
+     * Test command runs
+     */
+    public function testHandle(): void
+    {
+        // Non-existing group
+        $this->artisan("group:info unknown@unknown.org")
+             ->assertExitCode(1)
+             ->expectsOutput("Group unknown@unknown.org does not exist.");
+
+        $group = $this->getTestGroup('group-test@kolabnow.com');
+
+        // A group with no members
+        $this->artisan("group:info {$group->email}")
+             ->assertExitCode(0);
+
+        // TODO: Test output
+        // $expected = "Id: {$group->id}\nEmail: {$group->email}\nStatus: {$group->status}\n";
+    }
+}
diff --git a/src/tests/Feature/Console/Group/RemoveMemberTest.php b/src/tests/Feature/Console/Group/RemoveMemberTest.php
new file mode 100644
--- /dev/null
+++ b/src/tests/Feature/Console/Group/RemoveMemberTest.php
@@ -0,0 +1,76 @@
+<?php
+
+namespace Tests\Feature\Console\Group;
+
+use App\Group;
+use Illuminate\Support\Facades\Queue;
+use Tests\TestCase;
+
+class RemoveMemberTest extends TestCase
+{
+    /**
+     * {@inheritDoc}
+     */
+    public function setUp(): void
+    {
+        parent::setUp();
+
+        $this->deleteTestGroup('group-test@kolabnow.com');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function tearDown(): void
+    {
+        $this->deleteTestGroup('group-test@kolabnow.com');
+
+        parent::tearDown();
+    }
+
+    /**
+     * Test command runs
+     */
+    public function testHandle(): void
+    {
+        Queue::fake();
+
+        // Warning: We're not using artisan() here, as this will not
+        // allow us to test "empty output" cases
+
+        // Non-existing group
+        $code = \Artisan::call("group:remove-member test@group.com member@group.com");
+        $output = trim(\Artisan::output());
+
+        $this->assertSame(1, $code);
+        $this->assertSame("Group test@group.com does not exist.", $output);
+
+        $group = Group::create([
+                'email' => 'group-test@kolabnow.com',
+                'members' => ['member1@gmail.com', 'member2@gmail.com'],
+        ]);
+
+        // Existing group, non-existing member
+        $code = \Artisan::call("group:remove-member {$group->email} nonexisting@gmail.com");
+        $output = trim(\Artisan::output());
+
+        $this->assertSame(1, $code);
+        $this->assertSame("Member nonexisting@gmail.com not found in the group.", $output);
+
+        // Existing group, existing member
+        $code = \Artisan::call("group:remove-member {$group->email} member1@gmail.com");
+        $output = trim(\Artisan::output());
+
+        $this->assertSame(0, $code);
+        $this->assertSame('', $output);
+        $this->assertSame(['member2@gmail.com'], $group->refresh()->members);
+
+        // Existing group, the last existing member
+        $code = \Artisan::call("group:remove-member {$group->email} member2@gmail.com");
+        $output = trim(\Artisan::output());
+
+        $this->assertSame(0, $code);
+        $this->assertSame('', $output);
+        $this->assertSame([], $group->refresh()->members);
+    }
+}
diff --git a/src/tests/Feature/Controller/SignupTest.php b/src/tests/Feature/Controller/SignupTest.php
--- a/src/tests/Feature/Controller/SignupTest.php
+++ b/src/tests/Feature/Controller/SignupTest.php
@@ -31,6 +31,8 @@
 
         $this->deleteTestDomain('external.com');
         $this->deleteTestDomain('signup-domain.com');
+
+        $this->deleteTestGroup('group-test@kolabnow.com');
     }
 
     /**
@@ -45,6 +47,8 @@
         $this->deleteTestDomain('external.com');
         $this->deleteTestDomain('signup-domain.com');
 
+        $this->deleteTestGroup('group-test@kolabnow.com');
+
         parent::tearDown();
     }
 
@@ -686,4 +690,21 @@
 
         $this->assertSame($expected_result, $result);
     }
+
+    /**
+     * Signup login/domain validation, more cases
+     *
+     * Note: Technically these include unit tests, but let's keep it here for now.
+     */
+    public function testValidateLoginMore(): void
+    {
+        $group = $this->getTestGroup('group-test@kolabnow.com');
+        $login = 'group-test';
+        $domain = 'kolabnow.com';
+        $external = false;
+
+        $result = $this->invokeMethod(new SignupController(), 'validateLogin', [$login, $domain, $external]);
+
+        $this->assertSame(['login' => 'The specified login is not available.'], $result);
+    }
 }
diff --git a/src/tests/Feature/Controller/UsersTest.php b/src/tests/Feature/Controller/UsersTest.php
--- a/src/tests/Feature/Controller/UsersTest.php
+++ b/src/tests/Feature/Controller/UsersTest.php
@@ -32,6 +32,8 @@
         $this->deleteTestUser('deleted@kolab.org');
         $this->deleteTestUser('deleted@kolabnow.com');
         $this->deleteTestDomain('userscontroller.com');
+        $this->deleteTestGroup('group-test@kolabnow.com');
+        $this->deleteTestGroup('group-test@kolab.org');
 
         $user = $this->getTestUser('john@kolab.org');
         $wallet = $user->wallets()->first();
@@ -56,6 +58,8 @@
         $this->deleteTestUser('deleted@kolab.org');
         $this->deleteTestUser('deleted@kolabnow.com');
         $this->deleteTestDomain('userscontroller.com');
+        $this->deleteTestGroup('group-test@kolabnow.com');
+        $this->deleteTestGroup('group-test@kolab.org');
 
         $user = $this->getTestUser('john@kolab.org');
         $wallet = $user->wallets()->first();
@@ -1125,6 +1129,45 @@
         $this->assertSame(null, $deleted);
     }
 
+    /**
+     * User email validation - tests for an address being a group email address
+     *
+     * Note: Technically these include unit tests, but let's keep it here for now.
+     * FIXME: Shall we do a http request for each case?
+     */
+    public function testValidateEmailGroup(): void
+    {
+        Queue::fake();
+
+        $john = $this->getTestUser('john@kolab.org');
+        $pub_group = $this->getTestGroup('group-test@kolabnow.com');
+        $priv_group = $this->getTestGroup('group-test@kolab.org');
+
+        // A group in a public domain, existing
+        $result = UsersController::validateEmail($pub_group->email, $john, $deleted);
+        $this->assertSame('The specified email is not available.', $result);
+        $this->assertNull($deleted);
+
+        $pub_group->delete();
+
+        // A group in a public domain, deleted
+        $result = UsersController::validateEmail($pub_group->email, $john, $deleted);
+        $this->assertSame('The specified email is not available.', $result);
+        $this->assertNull($deleted);
+
+        // A group in a private domain, existing
+        $result = UsersController::validateEmail($priv_group->email, $john, $deleted);
+        $this->assertSame('The specified email is not available.', $result);
+        $this->assertNull($deleted);
+
+        $priv_group->delete();
+
+        // A group in a private domain, deleted
+        $result = UsersController::validateEmail($priv_group->email, $john, $deleted);
+        $this->assertSame(null, $result);
+        $this->assertSame($priv_group->id, $deleted->id);
+    }
+
     /**
      * List of alias validation cases for testValidateAlias()
      *
@@ -1204,6 +1247,7 @@
         $deleted_pub = $this->getTestUser('deleted@kolabnow.com');
         $deleted_pub->setAliases(['deleted-alias@kolabnow.com']);
         $deleted_pub->delete();
+        $group = $this->getTestGroup('group-test@kolabnow.com');
 
         // An alias that was a user email before is allowed, but only for custom domains
         $result = UsersController::validateAlias('deleted@kolab.org', $john);
@@ -1217,5 +1261,9 @@
 
         $result = UsersController::validateAlias('deleted-alias@kolabnow.com', $john);
         $this->assertSame('The specified alias is not available.', $result);
+
+        // A grpoup with the same email address exists
+        $result = UsersController::validateAlias($group->email, $john);
+        $this->assertSame('The specified alias is not available.', $result);
     }
 }
diff --git a/src/tests/Feature/UserTest.php b/src/tests/Feature/UserTest.php
--- a/src/tests/Feature/UserTest.php
+++ b/src/tests/Feature/UserTest.php
@@ -17,6 +17,7 @@
         $this->deleteTestUser('UserAccountA@UserAccount.com');
         $this->deleteTestUser('UserAccountB@UserAccount.com');
         $this->deleteTestUser('UserAccountC@UserAccount.com');
+        $this->deleteTestGroup('test-group@UserAccount.com');
         $this->deleteTestDomain('UserAccount.com');
     }
 
@@ -26,6 +27,7 @@
         $this->deleteTestUser('UserAccountA@UserAccount.com');
         $this->deleteTestUser('UserAccountB@UserAccount.com');
         $this->deleteTestUser('UserAccountC@UserAccount.com');
+        $this->deleteTestGroup('test-group@UserAccount.com');
         $this->deleteTestDomain('UserAccount.com');
 
         parent::tearDown();
@@ -235,7 +237,7 @@
 
         $this->assertCount(0, User::withTrashed()->where('id', $id)->get());
 
-        // Test an account with users
+        // Test an account with users, domain, and group
         $userA = $this->getTestUser('UserAccountA@UserAccount.com');
         $userB = $this->getTestUser('UserAccountB@UserAccount.com');
         $userC = $this->getTestUser('UserAccountC@UserAccount.com');
@@ -249,15 +251,20 @@
         $domain->assignPackage($package_domain, $userA);
         $userA->assignPackage($package_kolab, $userB);
         $userA->assignPackage($package_kolab, $userC);
+        $group = $this->getTestGroup('test-group@UserAccount.com');
+        $group->assignToWallet($userA->wallets->first());
 
         $entitlementsA = \App\Entitlement::where('entitleable_id', $userA->id);
         $entitlementsB = \App\Entitlement::where('entitleable_id', $userB->id);
         $entitlementsC = \App\Entitlement::where('entitleable_id', $userC->id);
         $entitlementsDomain = \App\Entitlement::where('entitleable_id', $domain->id);
+        $entitlementsGroup = \App\Entitlement::where('entitleable_id', $group->id);
+
         $this->assertSame(4, $entitlementsA->count());
         $this->assertSame(4, $entitlementsB->count());
         $this->assertSame(4, $entitlementsC->count());
         $this->assertSame(1, $entitlementsDomain->count());
+        $this->assertSame(1, $entitlementsGroup->count());
 
         // Delete non-controller user
         $userC->delete();
@@ -272,12 +279,15 @@
         $this->assertSame(0, $entitlementsA->count());
         $this->assertSame(0, $entitlementsB->count());
         $this->assertSame(0, $entitlementsDomain->count());
+        $this->assertSame(0, $entitlementsGroup->count());
         $this->assertTrue($userA->fresh()->trashed());
         $this->assertTrue($userB->fresh()->trashed());
         $this->assertTrue($domain->fresh()->trashed());
+        $this->assertTrue($group->fresh()->trashed());
         $this->assertFalse($userA->isDeleted());
         $this->assertFalse($userB->isDeleted());
         $this->assertFalse($domain->isDeleted());
+        $this->assertFalse($group->isDeleted());
     }
 
     /**
diff --git a/src/tests/TestCaseTrait.php b/src/tests/TestCaseTrait.php
--- a/src/tests/TestCaseTrait.php
+++ b/src/tests/TestCaseTrait.php
@@ -3,6 +3,7 @@
 namespace Tests;
 
 use App\Domain;
+use App\Group;
 use App\Transaction;
 use App\User;
 use Carbon\Carbon;
@@ -149,6 +150,22 @@
         $domain->forceDelete();
     }
 
+    protected function deleteTestGroup($email)
+    {
+        Queue::fake();
+
+        $group = Group::withTrashed()->where('email', $email)->first();
+
+        if (!$group) {
+            return;
+        }
+
+        $job = new \App\Jobs\Group\DeleteJob($group->id);
+        $job->handle();
+
+        $group->forceDelete();
+    }
+
     protected function deleteTestUser($email)
     {
         Queue::fake();
@@ -176,6 +193,17 @@
         return Domain::firstOrCreate(['namespace' => $name], $attrib);
     }
 
+    /**
+     * Get Group object by email, create it if needed.
+     * Skip LDAP jobs.
+     */
+    protected function getTestGroup($email, $attrib = [])
+    {
+        // Disable jobs (i.e. skip LDAP oprations)
+        Queue::fake();
+        return Group::firstOrCreate(['email' => $email], $attrib);
+    }
+
     /**
      * Get User object by email, create it if needed.
      * Skip LDAP jobs.