Introduction


All Mail Clients

Folders are not displayed properly

Username case sensitivity

POP3 with "keep a copy on server" will double mail


Netscape-based Clients (Netscape 4.x, 7.x, 8.x and Thunderbird)

Copy to Sent folder hangs when sending

Further Documentation
http://www.eden.rutgers.edu/maildirsol.html

Bug references:
http://forums.mozillazine.org/viewtopic.php?t=218625&postdays=0&postorder=asc&postsperpage=15&start=45
https://bugzilla.mozilla.org/show_bug.cgi?id=206408
http://forums.mozillazine.org/viewtopic.php?t=63477&postdays=0&postorder=asc&postsperpage=15&start=30
http://forums.mozillazine.org/viewtopic.php?p=1536680#1536680
https://bugzilla.mozilla.org/show_bug.cgi?id=236239
http://www.mozilla.org/quality/mailnews/mail-troubleshoot.html#imap


Mac Mail / mail.app

Sent folder doesn't work properly

  1. Click Mail
  2. Click Preferences
  3. Click the Accounts button at the top
  4. Click the Advanced tab
  5. In the IMAP Path Prefix box enter INBOX.
  6. Close the window, close Mail, reopen it and try again

Microsoft Outlook / Outlook Express

Folder resync

Mail filters inside Outlook break in various ways

Outlook error 0x80040403


Eudora

Folder access breaks

POP3 gives "Unknown Command LAST"


Pine

Folder searches may fail


Procmail

.procmailrc changes if you use Procmail to filter your email


WebMail

No known issues at this time.