I am running MailMate under OS X 10.9.2.
I use MailMate in conjunction with SpamSieve, and my desired
workflow is to leave MailMate and SpamSieve running continuously on
a computer whose displays are slept (but with the computer
remaining powered on and not suspended) while I'm away from the
machine.
Eventually, MailMate simply stops receiving/processing mail
while the displays are slept. The issue doesn't surface simply from
the act of sleeping the displays -- MailMate stays connected after
sleeping and immediately waking the displays. The connection only
drops after displays have been slept for an extended period of
time. If the computer is actively being used, the connection never
seems to drop.
This is an issue as of 1.7.2 (4161). Earlier builds had the same
issue, but would show my account as being disconnected when waking
the displays. Build 4161 doesn't show my account as being
disconnected but has clearly stopped receiving/processing mail. In
either case, I have to manually "Synchronize" the account after
waking the displays in order for MailMate to start processing mail
again.