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1. Sign into AOL Mail on a web browser. 2. Compose an email and add your own email address in the "To" field. 3. Send the email and check if it arrives.
If you see an image challenge question when sending mail, you should just be able to complete the challenge then send mail. If, however, you correctly answer the image challenge and still can't send mail, it could be a sign of a more serious issue with your account, which may require additional steps to secure your account.
In the early 1980s, when Simple Mail Transfer Protocol (SMTP) was designed, it provided for no real verification of sending user or system. This was not a problem while email systems were run by trusted corporations and universities, but since the commercialization of the Internet in the early 1990s, spam, phishing, and other crimes have been found to increasingly involve email.
Screenshot of a Gmail inbox, showing a blue check mark next to the email sender's name (Google, in this case). A pop-up message reads, (Google)
If you're having issues sending and receiving emails for your AOL Mail account in a third-party email application, you may need to reauthenticate your account by removing and re-entering your password or removing and re-adding your AOL Mail account. Get the steps for common third-party email applications.
If you've confirmed the message is safe, we recommend you review your connected devices, confirm or delete your app password, or use the AOL app to ensure continued safe access to your account. If you think the message indicates suspicious activity, we recommend you change your password and secure your account.
That way, a sender can identify itself and transmit several messages during the same session. While the authentication doesn't need to vary, once established, different messages may be sent according to different agreements and hence require different authorization. For example, messages may be relayed on behalf of different users.
When you get a message from a "MAILER-DAEMON" or a "Mail Delivery Subsystem" with a subject similar to "Failed Delivery," this means that an email you sent was undeliverable and has been bounced back to you. These messages are sent automatically and often include the reason for the delivery failure.