Mail 7.3 on 10.9.4 no longer fetches IMAP messages 'automatically' - even thought it's set to do so every n minutes.

POP3 perfect.

It seems to be a known problem.

Anyone know of a fix, please?

TIA!

I haven't encountered this problem, but Ive heard some folks have solved it by re-entering their IMAP information into Mail (remove the IMAP account and re-create it).

Thanks, Tacit: I've tried that several times. no go :-(