Email server settings
Comcast SMTP, IMAP & POP3 settings
Use these settings to add your Comcast account (comcast.net) to Outlook, Apple Mail, Thunderbird, your phone or any app that sends email over SMTP.
Incoming mail
IMAP
- Server
- imap.comcast.net
- Port
- 993
- Security
- SSL/TLS
- User name
- full email address
- Authentication
- OAuth 2.0, Normal password
- Server
- imap.comcast.net
- Port
- 143
- Security
- STARTTLS
- User name
- full email address
- Authentication
- OAuth 2.0, Normal password
Incoming mail
POP3
- Server
- mail.comcast.net
- Port
- 995
- Security
- SSL/TLS
- User name
- full email address
- Authentication
- OAuth 2.0, Normal password
- Server
- mail.comcast.net
- Port
- 110
- Security
- STARTTLS
- User name
- full email address
- Authentication
- OAuth 2.0, Normal password
Outgoing mail
SMTP
- Server
- smtp.comcast.net
- Port
- 465
- Security
- SSL/TLS
- User name
- full email address
- Authentication
- OAuth 2.0, Normal password
- Server
- smtp.comcast.net
- Port
- 587
- Security
- STARTTLS
- User name
- full email address
- Authentication
- OAuth 2.0, Normal password
How to set up Comcast in a mail app
- Choose add account → manual setup (or "other account") in your mail app.
- Enter your full Comcast email address and password.
- Pick IMAP for incoming mail and enter the server, port and security from the table above.
- Enter the SMTP server for outgoing mail (smtp.comcast.net, port 465) and enable authentication with the same login.
Comcast supports OAuth 2.0 sign-in. Apps that support it (Thunderbird, Apple Mail, Outlook) open a browser window to sign in, and you do not need to type your password into the mail app.
If the login keeps failing, enable IMAP/POP access in the Comcast web settings and use an app password if your account uses two-step verification.
Official help
- Instructions for setting up Thunderbird for use with comcast.net for home users.
- Instructions for enabling IMAP/POP/SMTP access for third-party clients
Settings from the Mozilla Thunderbird ISP database (MPL 2.0), which mail clients use for automatic setup.
Comcast email settings: FAQ
What is the Comcast SMTP server?
What are the Comcast IMAP settings?
Should I use IMAP or POP3?
Why does my Comcast login fail in a mail app?
Email validation API
Validate comcast.net addresses before you send
emailvalidation.io checks syntax, MX records and the mailbox over SMTP, flags disposable, role and free addresses and returns a quality score, in one request.
Read the docs100 free validations every month. No credit card required.
GET https://api.emailvalidation.io/v1/info?email=name@comcast.net
{
"email": "name@comcast.net",
"domain": "comcast.net",
"mx_found": true,
"smtp_check": …,
"free": …,
"disposable": false,
"state": "…"
}