Fixing Comcast email since the move to Yahoo on Mac Mail

After migrating your email to Yahoo.


On Yahoo's website, once you are logged in to your account, instead of using the password Yahoo created for the new account, do this.


Password

1. If in mail, go to your account settings, click on your icon in the upper right-hand corner, select manage your account

2. Under the main search bar at the top, click Security

3 Scroll down to the box that says external connections

4. Select the app passwords tab

5. There will be a "Create app password" button. Click it. If you do have other app passwords to the right of the box there is an icon and link that says "Create App Password." Click it.

6. This pops up a dialogue box: Enter your app's name. Put in something like Mac Mail.

7. Click Generate Password.

8. Another dialogue box will pop up with your password and an option to copy it. Click copy

9. Go to Mac Mail

10. On the Apple bar, select Mail, then add account.

11. Type in your email address.

12. In the list, select Other Mail. Do not select Yahoo from the list.

13. In the dialogue box, it should already populate the email field and have a password field

14. Paste in the app password that was generated in steps 7 and 8. IMPORTANT: Do not use your actual email password

15. It will time out because it is trying to use the old Comcast email servers this is fine. The Incoming and Outgoing mail server fields are now editable.

16. Put in the following. 

  • Incoming Mail Server: map.mail.yahoo.com
  • Outgoing Mail Server: smtp.mail.yahoo.com

17. Click Sign In, and it will connect.

Additional Info: If needed, here are the correct server settings from Yahoo, but everything should work at this point.

Incoming Mail (IMAP) Server

  • Server - imap.mail.yahoo.com
  • Port - 993
  • Requires SSL - Yes

Outgoing Mail (SMTP) Server

  • Server - smtp.mail.yahoo.com
  • Port - 465 or 587
  • Requires SSL - Yes
  • Requires authentication - Yes


MacBook Pro 13″, macOS 26.0

Posted on Oct 23, 2025 8:50 AM

Reply
Question marked as Top-ranking reply

Posted on Nov 8, 2025 2:49 PM

Finally worked. What a pain. Comcast has really deteriorated in quality of support and service.

17 replies

Nov 28, 2025 7:30 AM in response to Cybris2001

what I am finding out is mentioned below for Comcast email on yahoo servers, they are temperamental at best. I can send mail sometimes from my Mac, then other times it just sits in the outbox. I have gone through and deleted the app password on yahoo and recreate a new password and things seem to work for a day or two and then stop.


The write up above is what I used and found (no where on comcast site or yahoo is there any good info).


best of luck to everyone that was on comcast.

Fixing Comcast email since the move to Yahoo on Mac Mail

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.