SquirrelMail - Webmail for Nuts!
For SquirrelMail to work with courier-imap the setting Auto Create Special Folders : true 17. Don't move folders into Trash : false 18.
Webmail - Troubleshooting
Each time you delete a message to the Trash folder, a temporary copy of that other mail server that uses Courier-IMAP, a special type of mail service.
freshmeat.net: Project details for imapsync
We moved tons of messages from Communigate to Courier.IMAP with it. Creating folder [Trash] Couldn't create [Trash]17 NO Invalid mailbox name.
Maildir++
Courier-IMAP - an IMAP server; Courier - all of the above When moving a message to the Trash folder, append a line to maildirsize, containing a negative
IMAP: advanced account configuration - MozillaZine Knowledge Base
Courier IMAP servers default to 4 connections per TCP-IP address. child folders as peers to the Inbox, or be unable to create child folders.

Webmail - Troubleshooting
Each time you delete a message to the Trash folder, a temporary copy of that other mail server that uses Courier-IMAP, a special type of mail service.
freshmeat.net: Project details for imapsync
We moved tons of messages from Communigate to Courier.IMAP with it. Creating folder [Trash] Couldn't create [Trash]17 NO Invalid mailbox name.
Maildir++
Courier-IMAP - an IMAP server; Courier - all of the above When moving a message to the Trash folder, append a line to maildirsize, containing a negative
IMAP: advanced account configuration - MozillaZine Knowledge Base
Courier IMAP servers default to 4 connections per TCP-IP address. child folders as peers to the Inbox, or be unable to create child folders.
IMAP: advanced account configuration - MozillaZine Knowledge Base
Courier IMAP servers default to 4 connections per TCP-IP address. This mismatch can cause apparent It's possible to change the remote Trash folder.
Setting up Squirrelmail
For Courier-IMAP I use:. 1. Default Folder Prefix: (none); 2. Show Folder Prefix Option : false; 3. Trash Folder : INBOX.Trash; 4. Sent Folder : INBOX.
Re: [Courier-imap] quota and subfolders
Make > sure you've emptied your trash, you may wish to set IMAP_EMPTYTRASH. Is anything else other > than Courier IMAP touching the maildirs?
MuttWiki: MuttFaq
What is the best directory layout for Maildir folders? How can I create subfolders? How can I access the subfolders created by Kmail and Courier-IMAP?