Which ports should I use when setting up email?
The ports you use at this time are ports that belong to mail over a secure connection.
|incoming server POP3||:||995|
|incoming server IMAP via SSL/TLS||:||993|
|incoming server IMAP via STARTTLS *||:||143|
|outgoing server SSL||:||465|
|outgoing server STARTTLS||:||587 - preferred|
* this is for older mail clients < windows 8 and, for example, older android versions like KitKat and old iOs systems.
The ports associated with a unprotected connection are:
|incoming server POP3||:||110|
|outgoing server SSL||:||25 of 26|
It is better to don't use the above ports, rather use the ports that run through a secure connection.