[Dovecot] IMAP limitation

[Tom Allison]

I was trying to delete a LOT of email messages in one shot from 
Thunderbird.  I selected everything in a folder (>10,000) and then hit 
DELETE.

I received an IMAP error.  It clearly implied a limitation to just how 
many UIDS I can submit on an IMAP request at a time.

Is this a limitation of dovecot? (I'm assuming it is).

I can work around this, I think, because I haven't found a limitation to 
retrieving a list of email message UIDS as yet.  I could thereby send 
splices or chunks of that list of UIDS to delete.

I ran into this while trying to do a variety of obscene things in my 
attempts to develop a web mail application.  Because of the number of 
strange tests I have, I don't really "blame" anything since I'm not sure 
that anyone really expects to delete 10,000 messages at one command.