I want to add comcast(yahoo) email to gmail account

POP/SMTP email servers I used before transitioning to Yahoo no longer work.  Does Comcast have a solution?

AT&T generates a SECURE MAIL KEY for a password.  This is the Google instructions for AT&T:

1. Go to your AT&T Profile.
2. Sign in with your AT&T email and password.
3. Navigate to the Sign-in info tab.
4. Select your AT&T email account and locate the Secure Mail Key section.
5. Select Manage secure mail keys.
6. Select Create a secure mail key and give it a nickname (like "Gmail").
7. Copy the generated secure mail key (a string of letters with dashes) and keep it handy. [1, 2, 3, 4]

Step 2: Add your AT&T email to Gmail

1. Open Gmail on your computer and click the Gear icon (Settings) in the top right corner. [1, 2, 3]
2. Click See all settings.
3. Go to the Accounts and Import tab. [1]
4. Look for the Check mail from other accounts section and click Add a mail account. [1, 2]
5. Enter your full AT&T email address and click Next.
6. Select Import emails from my other account (POP3) and click Next. [1, 2, 3]
7. Enter the following information:
   • Username: Your full AT&T email address.
   • Password: Paste the Secure Mail Key you generated in Step 1.
   • POP Server: pop.mail.att.net
   • Port: 995 [1]
8. Check the boxes for your preferred options (e.g., leaving a copy of the message on the server, and always using a secure connection SSL). [1]
9. Click Add Account.