Support XFINITY Internet Using Email Client Programs with Comcast Email


To prevent spam and to ensure the security of our network and customers, Comcast no longer supports the use of port 25 for sending email. If you use an older email client (Outlook Express, Outlook, Mac Mail, etc.), this may impact your ability to send email. To learn more about port 25, please visit our FAQ, Why is Port 25 for Email Submission Not Supported?.

To configure an email client to use Comcast email (, the following settings should be used for sending and receiving email:

  Recommended Only If Needed
Incoming Mail Server - Name
Incoming Mail Server - Port Number 993 with SSL ON 143 with SSL ON
Outgoing Mail Server - Name
Outgoing Mail Server - Port Number 587 (SMTP) 465 (SMTPS)
SSL Encryption checked checked
Authentication XFINITY username and Password required

POP Access

Using POP to retrieve e-mail will cause a less-than-optimal experience, especially when you use multiple devices to check your email. We strongly recommend IMAP over POP since this will keep your emails in sync across different devices. If you do need to use POP due to any reason, you can use the following connection information:

  • Incoming Mail Server - Name:
  • Incoming Mail Server - Port Number: 995 (POP3 With SSL) or 110 (POP3 Without SSL)

Email Clients

If you use one of the email clients below, you will need to change your email program settings to send email on port 587. Click on the name of your email client to get detailed setup instructions and to change your settings:

Find this article at: