It is not posible to check pop3 accounts using secure ssl connection.
Steps to Reproduce:
1. Properties of Mailcheck
2. Mailbox: pop3ssl://username:password@pop3server or pop3-ssl: ...
That sounds like a valid request. I won't have time to work on it though, so if
anyone wants to take a look at it and provide a patch, that would be nice.
Mailwatch plugin does this: http://spuriousinterrupt.org/projects/mailwatch