Incoming

POP3 Ports

Port 110
This is the default POP3 non-encrypted port
Port 995
This is the port you need to use if you want to connect using POP3 securely

IMAP Ports

Port 143
This is the default IMAP non-encrypted port
Port 993
This is the port you need to use if you want to connect using IMAP securely

Outgoing

SMTP Ports

Port 25
This is the default SMTP non-encrypted port
Port 587
Encrypted/SSL port