To perform ATT email settings for Outlook devices, check out the steps mentioned below:
Firstly, open an email application like Outlook on your device.
Now, move to the account settings and choose to add an account option.
Choose others from the list of email providers.
In the username field, enter the correct email address and password in the password field.
Move to the manual setup option, choose the manual settings, and correctly enter the IMAP and POP settings.
Lastly, choose to done, and you can smoothly use the ATT email account.
In Outlook, select File > Add Account. Choose Manual setup or additional server types.
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Set up Outlook 2016 for AT&T email
Account Type - Select IMAP or POP3.
Incoming mail server - Enter imap.mail.att.net (IMAP) or inbound.att.net (POP3).
Outgoing mail server - Enter smtp.mail.att.net (IMAP) or outbound.att.net (POP3).