Use IMAP instead of POP account IMAP account type is considered more effective, secure, and advanced in features as compared to the POP account. Therefore, it is suggested to use an IMAP account that easily allows you to sync your emails across all devices and to configure IMAP account to take help from the above-mentioned steps of “ATT email account settings for Outlook.”
Remove your email profile and again add it In order to fix this issue, you can also try this solution of removing your ATT email account from Outlook and then again adding it back. To do so you have to: Open Outlook, go to the ‘Files’ section, and then to ‘Account Settings.’ Under ‘Account Settings’ select ‘Manage Profiles’ and then further click on ‘Show Profiles.’ After that, select your account from ‘Show Profiles’ in order to click on the ‘Remove’ button to remove the account from MS Outlook. Now, to add your account back on Outlook and to sign-in, follow the same settings of AT&T Mail for Outlook that are mentioned above in the first solution.
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