There was no update of AquaMail a couple of days ago.
There has not been an update in a few months, as I've been seriously ill.
Dead programmers don't release updates, and even though I'm not dead yet, things have not been going as well as I'd like...
... still, no update in a long time.
To diagnose the issue, please capture it in a debug log:
http://www.aqua-mail.com/?page_id=232Alternatively, you could try installing a recent development version from this forum's "Development builds" section, to see if maybe the issue is already fixed.