Ports for IMAP, POP and SMTP Email Services

Port Numbers for our Email Services

There are a few different ports used for mail services. Depending on how you would like to connect (encrypted or unencrypted) will dictate which ports you should be using. Where possible, use SSL. Some older devices and email clients may need to use unencrypted.

POP3 Server – Incoming Messages

  • Non-Encrypted -> AUTH -> Port 110
  • Secure (SSL) -> SSL -> Port 995

SMTP Server – Outgoing Messages

  • Non-Encrypted -> AUTH -> Port 587
  • Secure (TLS) -> StartTLS -> Port 587
  • Secure (SSL) -> SSL -> Port 465

IMAP Server – Incoming and Outgoing

  • Non-Encrypted -> AUTH -> Port 143
  • Secure (SSL) -> SSL -> Port 993
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Ports for IMAP, POP and SMTP Email Services written by UKC average rating 4.6/5 - 5 user ratings