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Xfinity (Comcast) email IMAP, POP and SMTP settings

The server names, ports and sign-in details you need to add Xfinity (Comcast) email to Outlook, Apple Mail, Thunderbird or any other email app.

By David Ray · Updated October 17, 2026 · How we research

Quick answerIncoming (IMAP): imap.comcast.net, port 993, SSL/TLS. Outgoing (SMTP): smtp.comcast.net, port 587, STARTTLS.

Xfinity (Comcast) email server settings

TypeServerPortSecurity
IMAP (incoming)imap.comcast.net993SSL/TLS
POP (incoming)pop3.comcast.net995SSL/TLS
SMTP (outgoing)smtp.comcast.net587STARTTLS
SMTP (outgoing)smtp.comcast.net465SSL/TLS

Username and password

Username: Your full Comcast address, such as [email protected].

Password: Your Xfinity ID and password.

Good to know

How to set it up in a mail app

  1. Open your mail app and choose to add an account. If it offers "Other", "Manual setup" or "Advanced", pick that.
  2. Choose IMAP (recommended) or POP.
  3. Enter the incoming and outgoing servers, ports and security from the table above.
  4. Use the username and password described below.
  5. Turn on "Outgoing server requires authentication" and use the same username and password.

If it doesn't work

Can't send
Make sure "outgoing server requires authentication" is on and you use port 587.

Getting a bounce with a code like 550 or 5.7.26 when you send? Look it up in the SMTP error code library.

Questions people ask

What is the Comcast IMAP server?
imap.comcast.net, port 993, with SSL/TLS.
What is the Comcast SMTP server?
smtp.comcast.net, port 587 with STARTTLS or 465 with SSL/TLS.