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.