adding comcast email to apple mail, get the message "this account already exists"

Email Settings

When your program asks you to set up your email, use these settings to connect your Comcast email:

• Incoming Mail Server Name: imap.comcast.net
• Incoming Mail Server Port Number: 993 with SSL ON
• If the Mail Client lets you select an authentication method, choose STARTTLS.
  • If Needed: 143 with SSL ON
• Outgoing Mail Server Name: smtp.comcast.net
• Outgoing Mail Server Port Number: 587 (SMTP)
  • If Needed: 465 (SMTPS)
• Encryption: TLS (use SSL if TLS isn't shown.)
• Authentication: Type in your Comcast username and password

My default email app is Outlook(using the outlook app). But I also want to add an app for my comcast email account. Their app is being discontinued. How do I use the Apple "Mail" app for this account?

Thanks, but I did all this and got an error: The mail server "imap.comcast.net" is not responding. Verify that you have entered the correct account info in Mail settings.

I have. Not sure where to go from here.

Yes, using Port Number 993 with SSL on. The link dosn't help because that's for their app which is being discontinued, which is why I want to configure the mail app on my phone for my xfinity (comcast) email.

Did you have it installed before?

Check Mail Preferences>Accounts.

Check Sys Prefs>Internet accounts.

And that is using Port Number: 993 with SSL ON ?

In a Browser login to https://www.xfinity.com/support/articles/sign-in-to-email-or-voicemail-on-xfinity

Does that work?