How do I setup ATT Email Settings Thunderbird?

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Att Email Settings Thunderbird: Learn how to set up your AT&T email, update your email settings, or add your secure mail key for Thunderbird.

att email settings thunderbird

Set up Att Email Settings Thunderbird

Use these steps to set up your email for Att Email Settings Thunderbird for the first time or on a new computer.

  1. In Thunderbird, select File > Add Account.
  2. Choose Manual setup or additional server types.
  3. Select Pop or IMAP.
  4. Complete your User Information:
    • Enter your name as you want it to display to others.
    • Enter your full AT&T email address.
  5. Complete the Server Information:
    • Account Type – Select IMAP or POP3.
    • Incoming mail server – Enter (IMAP) or (POP3).
    • Outgoing mail server – Enter (IMAP) or (POP3).
  6. Complete the Logon Information:
    • User Name – Enter your full email address.
    • Password – Enter or paste your secure mail key.
    • Check Remember password and Require logon using Secure Password Authentication.
  7. Select More Settings.
  8. Complete Outgoing Server info:
    • Check My outgoing server (SMTP) requires authentication.
    • Select Use same settings as my incoming mail server.
  9. Complete Advanced info:
    • Incoming server – Enter 993 (IMAP) or 995 (POP3).
    • Use the following type of encrypted connection – Choose SSL.
    • Outgoing server – Enter 465 (IMAP and POP3).
    • Use the following type of encrypted connection – Choose SSL.
  10. Select OK and then Next. Thunderbird will test your account info. If everything passes, select Finish.

Verify or update ATT email settings Thunderbird

Already have your email set up, but want to update your email account with your secure mail key? Here’s what you have to do:

  1. Select File > Account Settings.
  2. Choose your AT&T email account and then select Change
  3. Confirm or enter the following IMAP or POP settings:
    • Incoming server: (IMAP) or (POP3) 
    • Outgoing mail server: (IMAP) or (POP3)
  4. Check or enter your User Name (full AT&T email address).
  5. In the password field, enter your secure mail key and select the Remember password checkbox. 
  6. Select Next. Thunderbird will test your account settings. 
  7. Select Close, then Finish.



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att email settings thunderbird

8 thoughts on “How do I setup ATT Email Settings Thunderbird?”

  1. Didn’t help, keep getting: Sending of password for user did not succeed. Mail server responded: Server error – Please try again later.

    This started yesterday – I logged in thru Chrome created a secure mail key and was able to use Thunderbird . . . then today back to same problem. I really like Thunderbird as I use 4 email accounts for business and personal and it is great to have all in one place, bummed.


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