Troubleshoot your email account, settings, and apps
AT&T Mail account and settings
Check your email size. If your email is too big, it may not be sent.
Be sure you’re using the correct recipient email address. If not, you may get error messages like Failed Delivery or Problem Found - Message Not Sent.
Try signing out of your email account and signing back in.
Check your spam folder for missing emails.
Review your settings. Select the gear icon, then check:
Blocked addresses: Be sure you aren’t blocking addresses you want to get email from.
Filters: Are emails going to the correct folder?
Check if your account has been hacked. Your account may be compromised if you’re:
Missing emails
Receiving emails from your own email address
Getting complaints about spam coming from your email address
Seeing a display name that's different from the one you set up
Learn what to do if your email has been hacked or phished
Email programs and apps
Make sure you have an active internet connection.
See if you have a message in your Outbox folder. If so, remove it and try to send a new message.
Review common email error codes and steps to resolve them.
Make sure you are using the correct email client settings.
FYI: We’re upgrading our email security. If you get your email through an email program or app, be sure you’re ready for the changes. Learn more about the security upgrade.
Check for browser issues
Open AT&T Mail in a different web browser. For example, if you normally use Google Chrome®, try Firefox®.
Verify that your browser accepts cookies. If so, clear your cookies and cache. You’ll find this info in your browser's Preferences, Settings, or Options menu.
Enable JavaScript, and make sure it’s up to date. You’ll find it in your browser’s Settings or Options menu.
Disable browser tools or add-ons to see if they’re causing issues with email access.
Enable Adobe Flash Player and make sure it’s updated.
Check the settings of your firewall, antivirus programs, and anti-spyware software. They can cause a conflict with email programs and web browsers. Disable them one at a time and try to access your email. Don't forget to turn them back on once you know they aren’t causing the problem.
Regards,
Rachel Gomez