**How to reproduce**
Select an email in the inbox.
Click on button "delete".
**Actual results:**
The email is directly deleted.
It is not possible to restore the email.
**Expected results:**
When clicking on the button "delete" the emails are moved to folder "trash".
From this folder it is possible to restore the emails.
When an email is //already// in the folder "trash", clicking on "delete" results in completely/irreversibly deleting the email.
**Solution:**
The problem can be tackled by changing the server settings.
But the **default** should be changed so that deleted emails always appear in the file "trash" as expected.