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Xfinity (Comcast) Email IMAP and SMTP settings

The servers, ports and password you need to add Xfinity (Comcast) Email to any mail app, checked against Xfinity's own help pages.

Updated October 18, 2026

Comcast.net addresses work in other mail apps once you turn on third-party access in Xfinity's web mail.

Xfinity (Comcast) Email IMAP and SMTP settings

SettingXfinity (Comcast) Email
IMAP (incoming) serverimap.comcast.net
IMAP (incoming) port993
IMAP (incoming) encryptionSSL/TLS
SMTP (outgoing) serversmtp.comcast.net
SMTP (outgoing) port587
or 465 with SSL/TLS
SMTP (outgoing) encryptionSTARTTLS
UsernameYour full Comcast.net email address
PasswordYour Xfinity ID password
AuthenticationNormal password

Turn on third-party access

  1. Open Xfinity Email settings. Sign in to Xfinity's web mail and open its settings.
  2. Allow third-party access. Turn on access for third-party email programs, then add the account in your mail app.

Use Xfinity in GotEmail

In GotEmail, choose Add Account, then Other (IMAP), and type the settings from the table: the IMAP and SMTP servers, their ports and encryption, your username and password. GotEmail checks them as you sign in and tells you what to fix if a server says no.

Good to know

  • Xfinity doesn't support port 25 for sending.

Checked against Xfinity's own help pages: Email client programs with Xfinity Email.

Questions

What is the IMAP server for Xfinity (Comcast) Email?

Xfinity (Comcast) Email's IMAP server is imap.comcast.net, port 993, with SSL/TLS encryption.

What is the SMTP server for Xfinity (Comcast) Email?

Xfinity (Comcast) Email's SMTP server is smtp.comcast.net, port 587 with STARTTLS, or 465 with SSL/TLS.

Why does my mail app get an error with Comcast?

Turn on third-party access in Xfinity's web mail settings first.

Which SMTP port does Comcast use?

587 with TLS, or 465 if your app needs it.

Skip the settings.

GotEmail fills in Xfinity's servers for you, and keeps every account in one fast, private Mac app.