For various reasons, subfolders can get into the “not to sync” state in thunderbird 3.x. This is rather annoying as you will miss quite a lot messages, if you are e.g. using sieve mail filters on the remote imap server.
to turn that on do the following:
Edit – Preferences – Advanced – Config Editor – I’ll be careful, i promise!
and set that to true (“Toggle”).
In Thunderbird 6.0 this is slightly different.
Tools menu->Options->Advanced toolbar ->Advanced Configuration->click on ‘Config Editor…’ button.
The setting is called mail.server.default.check_all_folders_for_new
thanks for the update. thunderbird 6 did not yet hit debian sid, still on 3.1.x branch for icedove.
Actually there is an easier method that can be controlled on a per folder basis. Right click on the folder in Thunderbird and choose properties and then check or uncheck as you wish ‘When getting new messages for this account, always check this folder’
true that. but it does not work recursively or inherited, so i was looking for a method doing it for the complete inbox and sub folders. i have 50 to 100, varying from mailfilters applied.