Adding email account

Question

How to add T<removed PII>@att.net email account on my iPhone to Outlook365 on this computer?

Answer 1

Hi,

ATT requires a secure Email Key. Folloow this guide:

STEP 1:

• Sign in to your AT&T account at currently.att.yahoo.com
• Go to Profile > Sign-in info > Secure mail key > Manage secure mail key
• Select Add secure mail key, give it a nickname (e.g., "Outlook Desktop"), then click Create secure mail key
• Copy it immediately — it's shown only once

STEP 2:

• Open Outlook > File > Add Account
• Enter your full att.net email address, click Advanced options, check "Let me set up my account manually", then click Connect
• Select IMAP (recommended for multi-device sync)
• Server: imap.mail.att.net | Port: 993 | Encryption: SSL/TLS
• Server: smtp.mail.att.net | Port: 465 (try 587 if 465 fails) | Encryption: SSL/TLS.
• Username: your full att.net email address
• Password: paste your Secure Mail Key (NOT your AT&T login password)
• Check "Remember password" and "Require logon using Secure Password Authentication (SPA)".

Click OK > Next — Outlook will test the connection. Critical: AT&T no longer accepts your regular account password in third-party clients like Outlook. The Secure Mail Key is mandatory — without it, you will get an authentication error

I hope this information helps. If you have any more questions, don't hesitate to reach out.

Otherwise, if your problem is resolved, please take a moment to rate the answer. Wishing you good luck!

Answer 2

To add the att.net email account into Outlook 365 on the computer, first make sure the account is already set up and working (for example, on the iPhone Mail app or Outlook for iOS). Then add it in Outlook on the computer as another email account.

For reference, the general steps to add an email account into Outlook are:

1. Open Outlook.
2. Choose the option to add an account (for example, when Outlook starts for the first time, or from the account settings area).
3. Enter the att.net email address and follow the prompts to authenticate and complete setup.
4. If multi-factor authentication is enabled for the account, complete the verification steps.

Once finished, Outlook will sync mail for the att.net account alongside the existing accounts.

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References:

• Set up the Outlook app for iOS
• How do I add an account for O365, Outlook.com, or Exchange?