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?".