This is due to a bug in Thunderbird's handling of the CONDSTORE extension. Versions of Thunderbird from at least 17 (possibly earlier) up to 24.0 display incorrect new mail counts in the New Mail notification box.

see MboxChildFolders) then you will have to disable 'Server supports folders that contain sub-folders and messages' setting from Thunderbird. If you are not using a technique to allow folders that contain both sub-folders and messages (e.g. You should enable tb-extra-mailbox-sep workaround for IMAP. If you're using mbox, dbox or Maildir with :LAYOUT=fs , Evolution in Ubuntu Gutsy, 2.12.0-0ubuntu5, does support creating subfolders, at least when the parent folder is empty. Some versions don't support creating subfolders with mbox format.You should enable oe-ns-eoh workaround for POP3. I'm not actually sure what version exactly this refers to. You should enable outlook-no-nuls and oe-ns-eoh workarounds for POP3. You should enable delay-newmail workarounds for IMAP. This isn't Dovecot specific problem, and I'm not aware of any possible workarounds at the moment for this in server side. Using 'Headers only' synchronization is buggy and can cause 'Message is no longer available on this server' error when opening a mail.It speaks a different IMAP afterwards, so there are reasons to believe it caches the details of some server on the first connect and doesn't refresh them even if you change the server's hostname in the account settings. Roundcube, Thunderbird, or on the disk itself), and you get the error message 'BAD Error in IMAP command UID: Invalid UID messageset' in the log or rawlog: It helps to remove the problematic IMAP account completely from Outlook and recreating it again there. If some Outlook users don't see new or sent mails in the appropriate folders after a migration from UW IMAPd even if they are visible in other clients (e.g.Microsoft has a how-to that shows how to fix this (Outlook 2007, not Outlook 2003). Outlook might not hide or purge deleted items by default. Outlook 2003 has problems with older Dovecot's default POP3 UIDL format, which causes it to download the same mails over and over again if 'leave mails to server' option is enabled. You should enable outlook-no-nuls workaround with POP3. This however doesn't really work with any IMAP server.Īpple Mail 3.6 (that comes with OS X 10.5 Leopard) supports subscribing/unsubscribing to folders in the public namespace.

On Mac OS X Leopard 10.5 Mail.app appears to support subscribe/unsubscribe by right clicking on a mailbox, selecting 'Get Account Info' and selecting 'Subscription List' from tabs.

Outlook express 6 subscribe to imap folders