b68's profile

Regular Visitor

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17 Messages

Saturday, May 16th, 2026 8:16 PM

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:

Step 1: Generate an AT&T Secure Mail Key
Because AT&T requires extra security, you cannot use your regular webmail password in Gmail. [1, 2]
  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.
Once saved, Gmail will automatically fetch your AT&T emails. You can also choose to set up your AT&T email to send mail from Gmail by selecting "Yes, I want to be able to send mail as [your AT&T email]" on the next screen
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Gold Problem Solver

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27.4K Messages

1 day ago

...This was required when AT&T migrated its email to Yahoo.

Well, OK, but what does that have to do with Comcast migrating its email to Yahoo? Comcast is not AT&T, and neither is Yahoo. And it doesn't seem likely that someone who is NOT an AT&T customer would be able to "Go to [their] AT&T Profile".

... comcast.net (POP3) ...

If you are trying to fetch mail from Comcast's servers, that won't work for accounts migrated to Yahoo. You'd need to be using Yahoo's servers. See "IMAP, POP and SMTP settings for other third-party email clients" on https://help.yahoo.com/kb/new-yahoo-mail/SLN36803.html :

POP settings
Server: pop.mail.yahoo.com
Port: 995
Encryption method: SSL/TLS

ETA: I appears that you do need a "Secure Mail Key" to set up access to your Comcast.net-on-Yahoo email account from Gmail or other 3rd party email providers. But you don't get if from AT&T, you get it from Yahoo, which calls it an "app password". See https://help.yahoo.com/kb/new-yahoo-mail/generate-manage-rd-party-passwords-sln15241.html.

(edited)

Expert

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34.3K Messages

2 days ago

@b68 

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:

Step 1: Generate an AT&T Secure Mail Key
Because AT&T requires extra security, you cannot use your regular webmail password in Gmail. [1, 2]
  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.
Once saved, Gmail will automatically fetch your AT&T emails. You can also choose to set up your AT&T email to send mail from Gmail by selecting "Yes, I want to be able to send mail as [your AT&T email]" on the next screen

If you sign in to your gmail account, click on the gear icon, then "see all settings"

Click on the Accounts and Import tab and go from here.

Regular Visitor

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17 Messages

Before I migrated my Comcast email to Yahoo, I was receiving and sending Comcast email on Gmail.  Once I migrated I got these messages:

comcast.net (POP3)
Last checked: 1 day ago.View history  
  edit info delete
Authentication error. Mail from this account has not been retrieved since May 13.View details
Sat, May 16, 2026 at 8:56 AM Authentication error.
Server returned error "[AUTH] Migrated"
Fri, May 15, 2026 at 5:45 AM Authentication error.
Server returned error "[AUTH] Migrated"
Thu, May 14, 2026 at 4:32 AM Authentication error.
Server returned error "[AUTH] Migrated"
Wed, May 13, 2026 at 2:45 PM Authentication error.
Server returned error "[AUTH] Migrated"
Wed, May 13, 2026 at 8:37 AM Authentication error.
Server returned error "[AUTH] Migrated"

I deleted and reconfigured, and still get that message.

Expert

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34.3K Messages

@b68​ 

Once you've migrated to Yahoo! Mail, we can no longer help you with your comcast.net email [or gmail, for that matter].

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.

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