You can set and delete acls(permissions for users).
To manage permissions click on a folder and then "Tools->Imap-ACL", the toolbar button or go to:
"Folder Properties" -> "Sharing Tab".
Also includes a toolbar button, add via: "right click on your toolbar" -> "customize".
To get the "advanced view", go to "Addons" -> "Manage", right click on Imap-Acl, choose Settings then check advanced mode.
Now with French translation, thanks to Anthony Milan
Testet on Dovecot (1.2 and 2)-, Cyrus- and Courier-imap servers.
If you happen to find any Bugs, please Contact me via imapAclExtension (at) sirphreak (dot) org