diff --git a/.gitignore b/.gitignore
index 49cd4e3..0ae69b4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,15 +1,14 @@
 *.beam
 .rebar
 erl_crash.dump
 ebin
 deps
 db
 log
 .*.swp
 Mnesia*
 test.spec
 cover.spec
 test_logs
-rel/
 _build
 rebar.lock
diff --git a/rel/files/erl b/rel/files/erl
new file mode 100755
index 0000000..f4c63af
--- /dev/null
+++ b/rel/files/erl
@@ -0,0 +1,44 @@
+#!/bin/sh
+
+# /bin/sh on Solaris is not a POSIX compatible shell, but /usr/bin/ksh is.
+if [ `uname -s` = 'SunOS' -a "${POSIX_SHELL}" != "true" ]; then
+    POSIX_SHELL="true"
+    export POSIX_SHELL
+    exec /usr/bin/ksh $0 "$@"
+fi
+
+# clear it so if we invoke other scripts, they run as ksh as well
+unset POSIX_SHELL
+
+## This script replaces the default "erl" in erts-VSN/bin. This is
+## necessary as escript depends on erl and in turn, erl depends on
+## having access to a bootscript (start.boot). Note that this script
+## is ONLY invoked as a side-effect of running escript -- the embedded
+## node bypasses erl and uses erlexec directly (as it should).
+##
+## Note that this script makes the assumption that there is a
+## start_clean.boot file available in $ROOTDIR/release/VSN.
+
+# Determine the abspath of where this script is executing from.
+ERTS_BIN_DIR=$(cd ${0%/*} && pwd -P)
+
+# Now determine the root directory -- this script runs from erts-VSN/bin,
+# so we simply need to strip off two dirs from the end of the ERTS_BIN_DIR
+# path.
+ROOTDIR=${ERTS_BIN_DIR%/*/*}
+
+# Parse out release and erts info
+START_ERL=`cat $ROOTDIR/releases/start_erl.data`
+ERTS_VSN=${START_ERL% *}
+APP_VSN=${START_ERL#* }
+
+BINDIR=$ROOTDIR/erts-$ERTS_VSN/bin
+EMU=beam
+PROGNAME=`echo $0 | sed 's/.*\\///'`
+CMD="$BINDIR/erlexec"
+export EMU
+export ROOTDIR
+export BINDIR
+export PROGNAME
+
+exec $CMD -boot $ROOTDIR/releases/$APP_VSN/start_clean ${1+"$@"}
diff --git a/rel/files/install_upgrade.escript b/rel/files/install_upgrade.escript
new file mode 100644
index 0000000..253b7fa
--- /dev/null
+++ b/rel/files/install_upgrade.escript
@@ -0,0 +1,55 @@
+#!/usr/bin/env escript
+%%! -noshell -noinput
+%% -*- mode: erlang;erlang-indent-level: 4;indent-tabs-mode: nil -*-
+%% ex: ft=erlang ts=4 sw=4 et
+%% This file is left for backward-compatibility.
+%% You, probably, shouldn't include it to new projects.
+
+
+main([NodeName, Cookie, ReleasePackage]) ->
+    io:format("WARNING: 'install_upgrade.escript' is deprecated! "
+              "Use 'nodetool upgrade' instead.~n"),
+    NodeRoot = filename:dirname(filename:dirname(escript:script_name())),
+    NodeTool = which_nodetool(NodeRoot),
+    process_flag(trap_exit, true),
+    Port = erlang:open_port(
+             {spawn_executable, NodeTool},
+             [{args, ["-sname", NodeName,
+                      "-setcookie", Cookie,
+                      "upgrade", ReleasePackage]},
+              binary, exit_status, use_stdio, stderr_to_stdout, hide]),
+    port_loop(Port);
+main(_) ->
+    halt(1).
+
+
+which_nodetool(NodeRoot) ->
+    %% ${RELEASE_ROOT}/
+    %%   bin/install_upgrade.escript
+    %%   bin/nodetool ?
+    %%   erts-<erts_ver>/bin/nodetool ?
+    %%   releases/<app_ver>/nodetool ?
+    %%   releases/start_erl.data
+    {ok, Content} = file:read_file(filename:join([NodeRoot, "releases", "start_erl.data"])),
+    [ErtsVsn, AppVsn] = binary:split(Content, <<" ">>),
+    Probes = [
+              filename:join([NodeRoot, "bin", "nodetool"]),
+              filename:join([NodeRoot, <<"erts-", ErtsVsn/binary>>, "bin", "nodetool"]),
+              filename:join([NodeRoot, "releases", AppVsn, "bin", "nodetool"])
+             ],
+    case lists:dropwhile(fun(Path) -> not filelib:is_regular(Path) end, Probes) of
+        [] ->
+            io:format("ERROR: can't find 'nodetool' in ~p.~n", [Probes]),
+            halt(2);
+        [Path | _] ->
+            Path
+    end.
+
+port_loop(Port) ->
+    receive
+        {Port, {data, Data}} ->
+            io:put_chars(Data),
+            port_loop(Port);
+        {Port, {exit_status, Status}} ->
+            halt(Status)
+    end.
diff --git a/rel/files/kolab_guam b/rel/files/kolab_guam
new file mode 100755
index 0000000..814b112
--- /dev/null
+++ b/rel/files/kolab_guam
@@ -0,0 +1,433 @@
+#!/bin/sh
+# -*- tab-width:4;indent-tabs-mode:nil -*-
+# ex: ts=4 sw=4 et
+
+# /bin/sh on Solaris is not a POSIX compatible shell, but /usr/bin/ksh is.
+if [ `uname -s` = 'SunOS' -a "${POSIX_SHELL}" != "true" ]; then
+    POSIX_SHELL="true"
+    export POSIX_SHELL
+    # To support 'whoami' on old Solaris systems, add /usr/ucb to path
+    # (New Solaris systems do not have 'whoami')
+    PATH=/usr/ucb:$PATH
+    export PATH
+    exec /usr/bin/ksh $0 "$@"
+fi
+
+# clear it so if we invoke other scripts, they run as ksh
+unset POSIX_SHELL
+
+RUNNER_SCRIPT_DIR=$(cd ${0%/*} && pwd -P)
+RUNNER_SCRIPT=${0##*/}
+
+CALLER_DIR=$PWD
+
+RUNNER_BASE_DIR=${RUNNER_SCRIPT_DIR%/*}
+RUNNER_ETC_DIR=$RUNNER_BASE_DIR/etc
+# Note the trailing slash on $PIPE_DIR/
+PIPE_DIR=/tmp/$RUNNER_BASE_DIR/
+RUNNER_USER=
+
+# Make sure this script is running as the appropriate user
+if [ "$RUNNER_USER" ]; then
+    WHOAMI=$(id -un 2>/dev/null || whoami 2>/dev/null)
+    if [ $? -ne 0 ]; then
+        echo "Could not determine user name."
+        exit 1
+    fi
+    if [ "x$WHOAMI" != "x$RUNNER_USER" ]; then
+        # The 'su' command is more portable, but can't be configured as 'sudo'
+        # can to allow non-interactive calls from non-root users.
+        type sudo > /dev/null 2>&1
+        if [ $? -eq 0 ]; then
+            echo "Attempting to restart script through sudo -H -u $RUNNER_USER" >&2
+            exec sudo -H -u $RUNNER_USER -i $RUNNER_SCRIPT_DIR/$RUNNER_SCRIPT $@
+        else
+            if [ "x$WHOAMI" != "xroot" ]; then
+                echo "Only root can run $RUNNER_SCRIPT as $RUNNER_USER without requiring a password."
+                exit 1
+            else
+                echo "Attempting to restart script through su $RUNNER_USER" >&2
+                exec su $RUNNER_USER -c $RUNNER_SCRIPT_DIR/$RUNNER_SCRIPT $@
+            fi
+        fi
+    fi
+fi
+
+# Identify the script name
+SCRIPT=`basename $0`
+
+# Parse out release and erts info
+START_ERL=`cat $RUNNER_BASE_DIR/releases/start_erl.data`
+ERTS_VSN=${START_ERL% *}
+APP_VSN=${START_ERL#* }
+
+# Use $CWD/vm.args if exists, otherwise releases/APP_VSN/vm.args, or
+# else etc/vm.args
+if [ -e "$CALLER_DIR/vm.args" ]; then
+    VMARGS_PATH=$CALLER_DIR/vm.args
+    USE_DIR=$CALLER_DIR
+else
+    USE_DIR=$RUNNER_BASE_DIR
+    if [ -e "$RUNNER_BASE_DIR/releases/$APP_VSN/vm.args" ]; then
+        VMARGS_PATH="$RUNNER_BASE_DIR/releases/$APP_VSN/vm.args"
+    else
+        VMARGS_PATH="$RUNNER_ETC_DIR/vm.args"
+    fi
+fi
+
+RUNNER_LOG_DIR=$USE_DIR/log
+# Make sure log directory exists
+mkdir -p $RUNNER_LOG_DIR
+
+# Use releases/VSN/sys.config if it exists otherwise use etc/app.config
+if [ -e "$USE_DIR/sys.config" ]; then
+    CONFIG_PATH="$USE_DIR/sys.config"
+else
+    if [ -e "$RUNNER_BASE_DIR/releases/$APP_VSN/sys.config" ]; then
+        CONFIG_PATH="$RUNNER_BASE_DIR/releases/$APP_VSN/sys.config"
+    else
+        CONFIG_PATH="$RUNNER_ETC_DIR/app.config"
+    fi
+fi
+
+# Extract the target node name from node.args
+NAME_ARG=`egrep '^\-s?name' $VMARGS_PATH`
+if [ -z "$NAME_ARG" ]; then
+    echo "vm.args needs to have either -name or -sname parameter."
+    exit 1
+fi
+
+# Extract the name type and name from the NAME_ARG for REMSH
+REMSH_TYPE=`echo $NAME_ARG | awk '{print $1}'`
+REMSH_NAME=`echo $NAME_ARG | awk '{print $2}'`
+
+# Test if REMSH_NAME contains a @ and set REMSH_HOSTNAME_PART 
+# and REMSH_NAME_PART according REMSH_TYPE
+MAYBE_FQDN_HOSTNAME=`hostname`
+HOSTNAME=`echo $MAYBE_FQDN_HOSTNAME | awk -F. '{print $1}'`
+
+REMSH_HOSTNAME_PART="$MAYBE_FQDN_HOSTNAME"
+case "$REMSH_NAME" in
+    *@*)
+        REMSH_HOSTNAME_PART=`echo $REMSH_NAME | awk -F@ '{print $2}'`
+        REMSH_NAME_PART=`echo $REMSH_NAME | awk -F@ '{print $1}'`
+        ;;
+    *)
+        REMSH_NAME_PART="$REMSH_NAME"
+        if [ "$REMSH_TYPE" = "-sname" ]; then
+            REMSH_HOSTNAME_PART="$HOSTNAME"
+        else
+            # -name type, check if `hostname` is fqdn
+            if [ "$MAYBE_FQDN_HOSTNAME" = "$HOSTNAME" ]; then
+                echo "Hostname must be a fqdn domain name when node is configured with long names"
+                echo "and the full node name isn't configured in vm.args"
+                exit 1
+            fi
+        fi
+        ;;
+esac
+
+# Note the `date +%s`, used to allow multiple remsh to the same node
+# transparently
+REMSH_NAME_ARG="$REMSH_TYPE remsh`date +%s`@$REMSH_HOSTNAME_PART"
+REMSH_REMSH_ARG="-remsh $REMSH_NAME_PART@$REMSH_HOSTNAME_PART"
+
+# Extract the target cookie
+COOKIE_ARG=`grep '^\-setcookie' $VMARGS_PATH`
+if [ -z "$COOKIE_ARG" ]; then
+    echo "vm.args needs to have a -setcookie parameter."
+    exit 1
+fi
+
+# Make sure CWD is set to the right dir
+cd $USE_DIR
+
+# Make sure log directory exists
+mkdir -p $USE_DIR/log
+
+RUNNER_SCRIPT_DATA=
+if [ -e "$RUNNER_BASE_DIR/releases/$APP_VSN/runner_script.data" ]; then
+    RUNNER_SCRIPT_DATA=`cat $RUNNER_BASE_DIR/releases/$APP_VSN/runner_script.data`
+fi
+
+if [ -z "$RUNNER_SCRIPT_DATA" ]; then
+    ROOTDIR=$RUNNER_BASE_DIR
+    ERTS_PATH=$RUNNER_BASE_DIR/erts-$ERTS_VSN/bin
+    if [ -e "$RUNNER_BASE_DIR/releases/$APP_VSN/nodetool" ]; then
+        NODETOOL="$ERTS_PATH/escript $RUNNER_BASE_DIR/releases/$APP_VSN/nodetool $NAME_ARG $COOKIE_ARG"
+    else
+        NODETOOL="$ERTS_PATH/escript $ERTS_PATH/nodetool $NAME_ARG $COOKIE_ARG"
+    fi
+    SLIM_ARGS=
+elif [ "$RUNNER_SCRIPT_DATA" = "slim" ]; then
+    # Setup system paths
+    SYSTEM_ERL_PATH=`which erl`
+    if [ ! -x "$SYSTEM_ERL_PATH" ]; then
+        echo "Failed to find erl. Is Erlang/OTP available in PATH?"
+        exit 1
+    fi
+    SYSTEM_HOME_BIN=${SYSTEM_ERL_PATH%/*}
+    ROOTDIR=$SYSTEM_HOME_BIN/../lib/erlang
+    ERTS_PATH=$ROOTDIR/erts-$ERTS_VSN/bin
+    unset SYSTEM_ERL_PATH
+    unset SYSTEM_HOME_BIN
+
+    LOCAL_ERTS_PATH=$RUNNER_BASE_DIR/erts-$ERTS_VSN/bin
+    NODETOOL="$ERTS_PATH/escript $RUNNER_BASE_DIR/releases/$APP_VSN/nodetool $NAME_ARG $COOKIE_ARG"
+    unset LOCAL_ERL_PATH
+
+    # Setup additional arguments for slim release
+    SLIM_ARGS="-boot_var RELTOOL_EXT_LIB $RUNNER_BASE_DIR/lib -sasl releases_dir \"$RUNNER_BASE_DIR/releases\""
+else
+    echo "Unknown runner_script.data"
+    exit 1
+fi
+
+# Setup remote shell command to control node
+REMSH="$ERTS_PATH/erl -hidden $REMSH_NAME_ARG $REMSH_REMSH_ARG $COOKIE_ARG"
+
+# Common functions
+
+# Ping node without allowing nodetool to take stdin
+ping_node() {
+    $NODETOOL ping < /dev/null
+}
+
+# Set the PID global variable, return 1 on error
+get_pid() {
+    PID=`$NODETOOL getpid < /dev/null`
+    ES=$?
+    if [ "$ES" -ne 0 ]; then
+        echo "Node is not running!"
+        return 1
+    fi
+
+    # don't allow empty or init pid's
+    if [ -z $PID ] || [ "$PID" -le 1 ]; then
+        return 1
+    fi
+
+    return 0
+}
+
+# Check the first argument for instructions
+case "$1" in
+    start|start_boot)
+        # Make sure there is not already a node running
+        RES=`ping_node`
+        if [ "$RES" = "pong" ]; then
+            echo "Node is already running!"
+            exit 1
+        fi
+        case "$1" in
+            start)
+                shift
+                START_OPTION="console"
+                HEART_OPTION="start"
+                ;;
+            start_boot)
+                shift
+                START_OPTION="console_boot"
+                HEART_OPTION="start_boot"
+                ;;
+        esac
+        RUN_PARAM=$(printf "\'%s\' " "$@")
+        HEART_COMMAND="$RUNNER_BASE_DIR/bin/$SCRIPT $HEART_OPTION $RUN_PARAM"
+        export HEART_COMMAND
+        mkdir -p $PIPE_DIR
+        $ERTS_PATH/run_erl -daemon $PIPE_DIR $RUNNER_LOG_DIR "exec $RUNNER_BASE_DIR/bin/$SCRIPT $START_OPTION $RUN_PARAM" 2>&1
+        ;;
+
+    stop)
+        # Wait for the node to completely stop...
+        case `uname -s` in
+            Darwin)
+                # Make sure we explicitly set this because iTerm.app doesn't for
+                # some reason.
+                COMMAND_MODE=unix2003
+        esac
+
+        # Get the PID from nodetool
+        get_pid
+        GPR=$?
+        if [ "$GPR" -ne 0 ] || [ -z $PID ]; then
+            exit $GPR
+        fi
+
+        # Tell nodetool to initiate a stop
+        $NODETOOL stop
+        ES=$?
+        if [ "$ES" -ne 0 ]; then
+            exit $ES
+        fi
+
+        # Wait for the node to completely stop...
+        while `kill -s 0 $PID 2>/dev/null`
+        do
+            sleep 1
+        done
+        ;;
+
+    restart)
+        ## Restart the VM without exiting the process
+        $NODETOOL restart
+        ES=$?
+        if [ "$ES" -ne 0 ]; then
+            exit $ES
+        fi
+        ;;
+
+    reboot)
+        ## Restart the VM completely (uses heart to restart it)
+        $NODETOOL reboot
+        ES=$?
+        if [ "$ES" -ne 0 ]; then
+            exit $ES
+        fi
+        ;;
+
+    ping)
+        ## See if the VM is alive
+        ping_node
+        ES=$?
+        if [ "$ES" -ne 0 ]; then
+            exit $ES
+        fi
+        ;;
+
+    attach)
+        # Make sure a node is running
+        ping_node
+        ES=$?
+        if [ "$ES" -ne 0 ]; then
+            echo "Node is not running!"
+            exit $ES
+        fi
+
+        shift
+        exec $ERTS_PATH/to_erl $PIPE_DIR
+        ;;
+
+    eval)
+        # Make sure a node IS running
+        ping_node > /dev/null 2>&1
+        ES=$?
+        if [ "$ES" -ne 0 ]; then
+            echo "Node is not running!"
+            exit $ES
+        fi
+
+        shift
+        $NODETOOL eval "$1"
+        ES_EVAL=$?
+        if [ "$ES_EVAL" -ne 0 ]; then
+            exit $ES_EVAL
+        fi
+        ;;
+
+    remote_console)
+        # Make sure a node is running
+        ping_node
+        ES=$?
+        if [ "$ES" -ne 0 ]; then
+            echo "Node is not running!"
+            exit $ES
+        fi
+
+        shift
+        exec $REMSH
+        ;;
+
+    upgrade)
+        if [ -z "$2" ]; then
+            echo "Missing upgrade package argument"
+            echo "Usage: $SCRIPT upgrade {package base name}"
+            echo "NOTE {package base name} MUST NOT include the .tar.gz suffix"
+            exit 1
+        fi
+
+        # Make sure a node IS running
+        ping_node
+        ES=$?
+        if [ "$ES" -ne 0 ]; then
+            echo "Node is not running!"
+            exit $ES
+        fi
+
+        $NODETOOL upgrade $2
+        ;;
+
+    console|console_clean|console_boot)
+        # .boot file typically just $SCRIPT (ie, the app name)
+        # however, for debugging, sometimes start_clean.boot is useful.
+        # For e.g. 'setup', one may even want to name another boot script.
+        case "$1" in
+            console)        BOOTFILE=$SCRIPT ;;
+            console_clean)  BOOTFILE=start_clean ;;
+            console_boot)
+                shift
+                BOOTFILE="$1"
+                shift
+                ;;
+        esac
+        # Setup beam-required vars
+        BINDIR=$ROOTDIR/erts-$ERTS_VSN/bin
+        EMU=beam
+        PROGNAME=`echo $0 | sed 's/.*\\///'`
+        CMD="$BINDIR/erlexec $SLIM_ARGS -boot $RUNNER_BASE_DIR/releases/$APP_VSN/$BOOTFILE -mode embedded -config $CONFIG_PATH -args_file $VMARGS_PATH"
+        export EMU
+        export ROOTDIR
+        export BINDIR
+        export PROGNAME
+
+        # Dump environment info for logging purposes
+        echo "Exec: $CMD" -- ${1+"$@"}
+        echo "Root: $ROOTDIR"
+
+        # Log the startup
+        logger -t "$SCRIPT[$$]" "Starting up"
+
+        # Start the VM
+        exec $CMD -- ${1+"$@"}
+        ;;
+
+    foreground)
+        # start up the release in the foreground for use by runit
+        # or other supervision services
+
+        BOOTFILE=$SCRIPT
+        FOREGROUNDOPTIONS="-noinput +Bd"
+
+        # Setup beam-required vars
+        BINDIR=$ROOTDIR/erts-$ERTS_VSN/bin
+        EMU=beam
+        PROGNAME=`echo $0 | sed 's/.*\///'`
+        CMD="$BINDIR/erlexec $SLIM_ARGS $FOREGROUNDOPTIONS -boot $RUNNER_BASE_DIR/releases/$APP_VSN/$BOOTFILE -config $CONFIG_PATH -args_file $VMARGS_PATH"
+        export EMU
+        export ROOTDIR
+        export BINDIR
+        export PROGNAME
+
+        # Dump environment info for logging purposes
+        echo "Exec: $CMD" -- ${1+"$@"}
+        echo "Root: $ROOTDIR"
+
+        # Start the VM
+        exec $CMD -- ${1+"$@"}
+        ;;
+    getpid)
+        # Get the PID from nodetool
+        get_pid
+        ES=$?
+        if [ "$ES" -ne 0 ] || [ -z $PID ]; then
+            exit $ES
+        fi
+        echo $PID
+        ;;
+    *)
+        echo "Usage: $SCRIPT {start|start_boot <file>|foreground|stop|restart|reboot|ping|console|getpid|console_clean|console_boot <file>|attach|eval|remote_console|upgrade}"
+        exit 1
+        ;;
+esac
+
+exit 0
diff --git a/rel/files/kolab_guam.cmd b/rel/files/kolab_guam.cmd
new file mode 100644
index 0000000..b3a06c4
--- /dev/null
+++ b/rel/files/kolab_guam.cmd
@@ -0,0 +1,116 @@
+@setlocal
+
+@set node_name=kolab_guam
+
+@rem Get the absolute path to the parent directory,
+@rem which is assumed to be the node root.
+@for /F "delims=" %%I in ("%~dp0..") do @set node_root=%%~fI
+
+@rem CWD to the node root directory
+@cd %node_root%
+
+@set releases_dir=%node_root%\releases
+
+@rem Parse ERTS version and release version from start_erl.data
+@for /F "usebackq tokens=1,2" %%I in ("%releases_dir%\start_erl.data") do @(
+    @call :set_trim erts_version %%I
+    @call :set_trim release_version %%J
+)
+
+@if exist "%releases_dir%\%release_version%\vm.args" (
+    @set vm_args="%releases_dir%\%release_version%\vm.args"
+) else (
+    @set vm_args="%node_root%\etc\vm.args"
+)
+
+@if exist "%releases_dir%\%release_version%\sys.config" (
+    @set sys_config="%releases_dir%\%release_version%\sys.config"
+) else (
+    @set sys_config="%node_root%\etc\app.config"
+)
+
+@set node_boot_script=%releases_dir%\%release_version%\%node_name%
+@set clean_boot_script=%releases_dir%\%release_version%\start_clean
+
+@rem extract erlang cookie from vm.args
+@for /f "usebackq tokens=1-2" %%I in (`findstr /b \-setcookie "%vm_args%"`) do @set erlang_cookie=%%J
+
+@set erts_bin=%node_root%\erts-%erts_version%\bin
+
+@set service_name=%node_name%_%release_version%
+
+@set erlsrv="%erts_bin%\erlsrv.exe"
+@set epmd="%erts_bin%\epmd.exe"
+@set escript="%erts_bin%\escript.exe"
+@set werl="%erts_bin%\werl.exe"
+@set nodetool="%erts_bin%\nodetool"
+
+@if "%1"=="usage" @goto usage
+@if "%1"=="install" @goto install
+@if "%1"=="uninstall" @goto uninstall
+@if "%1"=="start" @goto start
+@if "%1"=="stop" @goto stop
+@if "%1"=="restart" @call :stop && @goto start
+@if "%1"=="console" @goto console
+@if "%1"=="ping" @goto ping
+@if "%1"=="query" @goto query
+@if "%1"=="attach" @goto attach
+@if "%1"=="upgrade" @goto upgrade
+@echo Unknown command: "%1"
+
+:usage
+@echo Usage: %~n0 [install^|uninstall^|start^|stop^|restart^|console^|ping^|query^|attach^|upgrade]
+@goto :EOF
+
+:install
+@set description=Erlang node %node_name% in %node_root%
+@set start_erl=%node_root%\bin\start_erl.cmd
+@set args= ++ %node_name% ++ %node_root%
+@%erlsrv% add %service_name% -c "%description%" -sname %node_name% -w "%node_root%" -m "%start_erl%" -args "%args%" -stopaction "init:stop()."
+@goto :EOF
+
+:uninstall
+@%erlsrv% remove %service_name%
+@%epmd% -kill
+@goto :EOF
+
+:start
+@%erlsrv% start %service_name%
+@goto :EOF
+
+:stop
+@%erlsrv% stop %service_name%
+@goto :EOF
+
+:console
+@start "%node_name% console" %werl% -boot "%node_boot_script%" -config "%sys_config%" -args_file "%vm_args%" -sname %node_name%
+@goto :EOF
+
+:ping
+@%escript% %nodetool% ping -sname "%node_name%" -setcookie "%erlang_cookie%"
+@exit %ERRORLEVEL%
+@goto :EOF
+
+:query
+@%erlsrv% list %service_name%
+@exit %ERRORLEVEL%
+@goto :EOF
+
+:attach
+@for /f "usebackq" %%I in (`hostname`) do @set hostname=%%I
+start "%node_name% attach" %werl% -boot "%clean_boot_script%" -remsh %node_name%@%hostname% -sname console -setcookie %erlang_cookie%
+@goto :EOF
+
+:upgrade
+@if "%2"=="" (
+    @echo Missing upgrade package argument
+    @echo Usage: %~n0 upgrade {package base name}
+    @echo NOTE {package base name} MUST NOT include the .tar.gz suffix
+    @goto :EOF
+)
+@%escript% %nodetool% -sname "%node_name%" -setcookie "%erlang_cookie%" upgrade %2
+@goto :EOF
+
+:set_trim
+@set %1=%2
+@goto :EOF
diff --git a/rel/files/nodetool b/rel/files/nodetool
new file mode 100755
index 0000000..a97f756
--- /dev/null
+++ b/rel/files/nodetool
@@ -0,0 +1,219 @@
+#!/usr/bin/env escript
+%% -*- mode: erlang;erlang-indent-level: 4;indent-tabs-mode: nil -*-
+%% ex: ft=erlang ts=4 sw=4 et
+%% -------------------------------------------------------------------
+%%
+%% nodetool: Helper Script for interacting with live nodes
+%%
+%% -------------------------------------------------------------------
+main(Args) ->
+    ok = start_epmd(),
+    %% Extract the args
+    {RestArgs, TargetNode} = process_args(Args, [], undefined),
+
+    %% any commands that don't need a running node
+    case RestArgs of
+        ["chkconfig", File] ->
+            case file:consult(File) of
+                {ok, _} ->
+                    io:format("ok\n"),
+                    halt(0);
+                {error, {Line, Mod, Term}} ->
+                    io:format(standard_error, ["Error on line ",
+                              file:format_error({Line, Mod, Term}), "\n"], []),
+                    halt(1);
+                {error, R} ->
+                    io:format(standard_error, ["Error reading config file: ",
+                              file:format_error(R), "\n"], []),
+                    halt(1)
+            end;
+        _ ->
+            ok
+    end,
+
+    %% See if the node is currently running  -- if it's not, we'll bail
+    case {net_kernel:hidden_connect_node(TargetNode),
+          net_adm:ping(TargetNode)} of
+        {true, pong} ->
+            ok;
+        {false,pong} ->
+            io:format("Failed to connect to node ~p .\n", [TargetNode]),
+            halt(1);
+        {_, pang} ->
+            io:format("Node ~p not responding to pings.\n", [TargetNode]),
+            halt(1)
+    end,
+
+    case RestArgs of
+        ["getpid"] ->
+            io:format("~p\n",
+                      [list_to_integer(rpc:call(TargetNode, os, getpid, []))]);
+        ["ping"] ->
+            %% If we got this far, the node already responsed to a
+            %% ping, so just dump a "pong"
+            io:format("pong\n");
+        ["stop"] ->
+            io:format("~p\n", [rpc:call(TargetNode, init, stop, [], 60000)]);
+        ["restart"] ->
+            io:format("~p\n", [rpc:call(TargetNode, init, restart, [], 60000)]);
+        ["reboot"] ->
+            io:format("~p\n", [rpc:call(TargetNode, init, reboot, [], 60000)]);
+        ["rpc", Module, Function | RpcArgs] ->
+            case rpc:call(TargetNode,
+                          list_to_atom(Module),
+                          list_to_atom(Function),
+                          [RpcArgs], 60000) of
+                ok ->
+                    ok;
+                {badrpc, Reason} ->
+                    io:format("RPC to ~p failed: ~p\n", [TargetNode, Reason]),
+                    halt(1);
+                _ ->
+                    halt(1)
+            end;
+        ["rpc_infinity", Module, Function | RpcArgs] ->
+            case rpc:call(TargetNode,
+                          list_to_atom(Module),
+                          list_to_atom(Function),
+                          [RpcArgs], infinity) of
+                ok ->
+                    ok;
+                {badrpc, Reason} ->
+                    io:format("RPC to ~p failed: ~p\n", [TargetNode, Reason]),
+                    halt(1);
+                _ ->
+                    halt(1)
+            end;
+        ["rpcterms", Module, Function, ArgsAsString] ->
+            case rpc:call(TargetNode,
+                          list_to_atom(Module),
+                          list_to_atom(Function),
+                          consult(ArgsAsString), 60000) of
+                {badrpc, Reason} ->
+                    io:format("RPC to ~p failed: ~p\n", [TargetNode, Reason]),
+                    halt(1);
+                Other ->
+                    io:format("~p\n", [Other])
+            end;
+        ["eval", Str0] ->
+            Str = string:strip(Str0, right, $.) ++ ".",
+            Bindings = erl_eval:new_bindings(),
+            case rpc:call(TargetNode,
+                          erl_eval,
+                          exprs,
+                          [parse(Str), Bindings],
+                          60000) of
+                {badrpc, Reason} ->
+                    io:format("RPC to ~p failed: ~p\n", [TargetNode, Reason]),
+                    halt(1);
+                {value, Value, _Bindings} ->
+                    io:format("~p\n", [Value])
+            end;
+        ["upgrade", ReleasePackage] ->
+            %% TODO: This script currently does NOT support slim releases.
+            %% Necessary steps to upgrade a slim release are as follows:
+            %% 1. unpack relup archive manually
+            %% 2. copy releases directory and necessary libraries
+            %% 3. using release_hander:set_unpacked/2 .
+            %% For more details, see https://github.com/rebar/rebar/pull/52
+            %% and https://github.com/rebar/rebar/issues/202
+            {ok, Vsn} = rpc:call(TargetNode, release_handler, unpack_release,
+                                 [ReleasePackage], 60000),
+            io:format("Unpacked Release ~p\n", [Vsn]),
+            {ok, OtherVsn, Desc} = rpc:call(TargetNode, release_handler,
+                                            check_install_release, [Vsn], 60000),
+            {ok, OtherVsn, Desc} = rpc:call(TargetNode, release_handler,
+                                            install_release, [Vsn], 60000),
+            io:format("Installed Release ~p\n", [Vsn]),
+            ok = rpc:call(TargetNode, release_handler, make_permanent, [Vsn], 60000),
+            io:format("Made Release ~p Permanent\n", [Vsn]);
+        Other ->
+            io:format("Other: ~p\n", [Other]),
+            io:format("Usage: nodetool {chkconfig|getpid|ping|stop|restart|reboot|rpc|rpc_infinity|rpcterms|eval|upgrade}\n")
+    end,
+    net_kernel:stop().
+
+process_args([], Acc, TargetNode) ->
+    {lists:reverse(Acc), TargetNode};
+process_args(["-setcookie", Cookie | Rest], Acc, TargetNode) ->
+    erlang:set_cookie(node(), list_to_atom(Cookie)),
+    process_args(Rest, Acc, TargetNode);
+process_args(["-name", TargetName | Rest], Acc, _) ->
+    ThisNode = append_node_suffix(TargetName, "_maint_"),
+    {ok, _} = net_kernel:start([ThisNode, longnames]),
+    process_args(Rest, Acc, nodename(TargetName));
+process_args(["-sname", TargetName | Rest], Acc, _) ->
+    ThisNode = append_node_suffix(TargetName, "_maint_"),
+    {ok, _} = net_kernel:start([ThisNode, shortnames]),
+    process_args(Rest, Acc, nodename(TargetName));
+process_args([Arg | Rest], Acc, Opts) ->
+    process_args(Rest, [Arg | Acc], Opts).
+
+
+start_epmd() ->
+    [] = os:cmd(epmd_path() ++ " -daemon"),
+    ok.
+
+epmd_path() ->
+    ErtsBinDir = filename:dirname(escript:script_name()),
+    Name = "epmd",
+    case os:find_executable(Name, ErtsBinDir) of
+        false ->
+            case os:find_executable(Name) of
+                false ->
+                    io:format("Could not find epmd.~n"),
+                    halt(1);
+                GlobalEpmd ->
+                    GlobalEpmd
+            end;
+        Epmd ->
+            Epmd
+    end.
+
+
+nodename(Name) ->
+    case string:tokens(Name, "@") of
+        [_Node, _Host] ->
+            list_to_atom(Name);
+        [Node] ->
+            [_, Host] = string:tokens(atom_to_list(node()), "@"),
+            list_to_atom(lists:concat([Node, "@", Host]))
+    end.
+
+append_node_suffix(Name, Suffix) ->
+    case string:tokens(Name, "@") of
+        [Node, Host] ->
+            list_to_atom(lists:concat([Node, Suffix, os:getpid(), "@", Host]));
+        [Node] ->
+            list_to_atom(lists:concat([Node, Suffix, os:getpid()]))
+    end.
+
+
+%%
+%% Given a string or binary, parse it into a list of terms, ala file:consult/0
+%%
+consult(Str) when is_list(Str) ->
+    consult([], Str, []);
+consult(Bin) when is_binary(Bin)->
+    consult([], binary_to_list(Bin), []).
+
+consult(Cont, Str, Acc) ->
+    case erl_scan:tokens(Cont, Str, 0) of
+        {done, Result, Remaining} ->
+            case Result of
+                {ok, Tokens, _} ->
+                    {ok, Term} = erl_parse:parse_term(Tokens),
+                    consult([], Remaining, [Term | Acc]);
+                {eof, _Other} ->
+                    lists:reverse(Acc);
+                {error, Info, _} ->
+                    {error, Info}
+            end;
+        {more, Cont1} ->
+            consult(Cont1, eof, Acc)
+    end.
+
+parse(Str) ->
+    {ok, Tokens, _} = erl_scan:string(Str),
+    {ok, Exprs} = erl_parse:parse_exprs(Tokens),
+    Exprs.
diff --git a/rel/files/start_erl.cmd b/rel/files/start_erl.cmd
new file mode 100644
index 0000000..c0f2072
--- /dev/null
+++ b/rel/files/start_erl.cmd
@@ -0,0 +1,40 @@
+@setlocal
+
+@rem Parse arguments. erlsrv.exe prepends erl arguments prior to first ++.
+@rem Other args are position dependent.
+@set args="%*"
+@for /F "delims=++ tokens=1,2,3" %%I in (%args%) do @(
+    @set erl_args=%%I
+    @call :set_trim node_name %%J
+    @rem Trim spaces from the left of %%K (node_root), which may have spaces inside
+    @for /f "tokens=* delims= " %%a in ("%%K") do @set node_root=%%a
+)
+
+@set releases_dir=%node_root%\releases
+
+@rem parse ERTS version and release version from start_erl.dat
+@for /F "usebackq tokens=1,2" %%I in ("%releases_dir%\start_erl.data") do @(
+    @call :set_trim erts_version %%I
+    @call :set_trim release_version %%J
+)
+
+@set erl_exe="%node_root%\erts-%erts_version%\bin\erl.exe"
+@set boot_file="%releases_dir%\%release_version%\%node_name%"
+
+@if exist "%releases_dir%\%release_version%\sys.config" (
+    @set app_config="%releases_dir%\%release_version%\sys.config"
+) else (
+    @set app_config="%node_root%\etc\app.config"
+)
+
+@if exist "%releases_dir%\%release_version%\vm.args" (
+    @set vm_args="%releases_dir%\%release_version%\vm.args"
+) else (
+    @set vm_args="%node_root%\etc\vm.args"
+)
+
+@%erl_exe% %erl_args% -boot %boot_file% -config %app_config% -args_file %vm_args%
+
+:set_trim
+@set %1=%2
+@goto :EOF
diff --git a/rel/files/sys.config b/rel/files/sys.config
new file mode 100644
index 0000000..bc9bd07
--- /dev/null
+++ b/rel/files/sys.config
@@ -0,0 +1,85 @@
+%% Example configuration for Guam.
+[
+    {
+        kolab_guam, [
+            {
+                imap_servers, [
+                    {
+                        imap, [
+                            { host, "127.0.0.1" },
+                            { port, 143 },
+                            { tls, starttls }
+                        ]
+                    },
+                    {
+                        imaps, [
+                            { host, "127.0.0.1" },
+                            { port, 993 },
+                            { tls, true }
+                        ]
+                    }
+                ]
+            },
+            {
+                listeners, [
+                    {
+                        imap, [
+                            { port, 9143 },
+                            { imap_server, imap },
+                            {
+                                rules, [
+                                    { filter_groupware, [] }
+                                ]
+                            },
+                            {
+                                tls_config, [
+                                    { certfile, "/etc/pki/tls/private/localhost.pem" }
+                                ]
+                            }
+                        ]
+                    },
+                    {
+                        imaps, [
+                            { port, 9993 },
+                            { implicit_tls, true },
+                            { imap_server, imaps },
+                            {
+                                rules, [
+                                    { filter_groupware, [] }
+                                ]
+                            },
+                            {
+                                tls_config, [
+                                    { certfile, "/etc/pki/tls/private/localhost.pem" }
+                                ]
+                            }
+                        ]
+                    }
+                ]
+            }
+        ]
+    },
+
+    {
+        lager, [
+            {
+                handlers, [
+                    { lager_console_backend, debug },
+                    { lager_file_backend, [ { file, "log/error.log"}, { level, error } ] },
+                    { lager_file_backend, [ { file, "log/console.log"}, { level, info } ] }
+                ]
+            }
+        ]
+    },
+
+    %% SASL config
+    {
+        sasl, [
+            { sasl_error_logger, { file, "log/sasl-error.log" } },
+            { errlog_type, error },
+            { error_logger_mf_dir, "log/sasl" },      % Log directory
+            { error_logger_mf_maxbytes, 10485760 },   % 10 MB max file size
+            { error_logger_mf_maxfiles, 5 }           % 5 files max
+        ]
+    }
+].
diff --git a/rel/files/vm.args b/rel/files/vm.args
new file mode 100644
index 0000000..f62ae27
--- /dev/null
+++ b/rel/files/vm.args
@@ -0,0 +1,19 @@
+## Name of the node
+-name kolab_guam@127.0.0.1
+
+## Cookie for distributed erlang
+-setcookie kolab_guam
+
+## Heartbeat management; auto-restarts VM if it dies or becomes unresponsive
+## (Disabled by default..use with caution!)
+##-heart
+
+## Enable kernel poll and a few async threads
+##+K true
+##+A 5
+
+## Increase number of concurrent ports/sockets
+##-env ERL_MAX_PORTS 4096
+
+## Tweak GC to run more often
+##-env ERL_FULLSWEEP_AFTER 10
diff --git a/rel/reltool.config b/rel/reltool.config
new file mode 100644
index 0000000..1ece54f
--- /dev/null
+++ b/rel/reltool.config
@@ -0,0 +1,51 @@
+%% -*- mode: erlang -*-
+%% ex: ft=erlang
+{sys, [
+       {lib_dirs, ["../deps"]},
+       {erts, [{mod_cond, derived}, {app_file, strip}]},
+       {app_file, strip},
+       {rel, "kolab_guam", "0.9",
+        [
+         kernel,
+         stdlib,
+         sasl,
+         compiler,
+         syntax_tools,
+         goldrush,
+         lager,
+         lager_syslog,
+         crypto,
+         kolab_guam
+        ]},
+       {rel, "start_clean", "",
+        [
+         kernel,
+         stdlib
+        ]},
+       {boot_rel, "kolab_guam"},
+       {profile, embedded},
+       {incl_cond, derived},
+       {excl_archive_filters, [".*"]}, %% Do not archive built libs
+       {excl_sys_filters, ["^bin/(?!start_clean.boot)",
+                           "^erts.*/bin/(dialyzer|typer)",
+                           "^erts.*/(doc|info|include|lib|man|src)"]},
+       {excl_app_filters, ["\.gitignore"]},
+       {app, kolab_guam, [{mod_cond, app}, {incl_cond, include}, {lib_dir, "../apps/kolab_guam"}]}
+      ]}.
+
+{target_dir, "kolab_guam"}.
+
+{overlay, [
+           {mkdir, "log/sasl"},
+           {copy, "files/erl", "\{\{erts_vsn\}\}/bin/erl"},
+           {copy, "files/nodetool", "releases/\{\{rel_vsn\}\}/nodetool"},
+           {copy, "kolab_guam/bin/start_clean.boot",
+                  "\{\{erts_vsn\}\}/bin/start_clean.boot"},
+           {copy, "files/kolab_guam", "bin/kolab_guam"},
+           {copy, "files/kolab_guam.cmd", "bin/kolab_guam.cmd"},
+           {copy, "files/start_erl.cmd", "bin/start_erl.cmd"},
+           %% Following line may be safely removed in new projects
+           {copy, "files/install_upgrade.escript", "bin/install_upgrade.escript"},
+           {copy, "files/sys.config", "releases/\{\{rel_vsn\}\}/sys.config"},
+           {copy, "files/vm.args", "releases/\{\{rel_vsn\}\}/vm.args"}
+          ]}.