Yes, mail connections for all protocols with SSL encryption are supported. The ports for this are:
POP3: 995
IMAP: 993
SMTP: 465
You should choose the option in your mail client to use secure password authentication when using a secure connection.
It is expected that a warning will be given when making a secure connection which is addressed in the support database article entitled "Why do I see an SSL warning when connecting to my mailbox with a mail client?".