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2. Use AOL Certified Mail to confirm legitimate AOL emails

   help.aol.com/articles/what-is-aol-certified-mail

   If you're ever concerned about the legitimacy of these emails, just check to see if there's a green "AOL Certified Mail" icon beside the sender name. When you open the email, you'll also see the Certified Mail banner above the message details. When you get a message that seems to be from AOL, but it doesn't have those 2 indicators, and it isn't ...

3. Use AOL Official Mail to confirm legitimate AOL emails

   help.aol.com/articles/what-is-official-aol-mail

   When we send you important emails, we'll mark the message with a small AOL icon beside the sender name. When you open the message, you'll see the "Official Mail" banner above the details of the message. If you get a message that seems like it's from AOL, but it doesn't have those 2 indicators, and it isn't alternatively marked as AOL Certified ...

4. Identify legitimate AOL websites, requests, and communications

   help.aol.com/articles/identify-legitimate-aol...

   • Fake email addresses - Malicious actors sometimes send from email addresses made to look like an official email address but in fact is missing a letter(s), misspelled, replaces a letter with a lookalike number (e.g. “O” and “0”), or originates from free email services that would not be used for official communications.

5. Data validation - Wikipedia

   en.wikipedia.org/wiki/Data_validation

   Overview. Data validation is intended to provide certain well-defined guarantees for fitness and consistency of data in an application or automated system. Data validation rules can be defined and designed using various methodologies, and be deployed in various contexts. [1] Their implementation can use declarative data integrity rules, or ...

6. Email authentication - Wikipedia

   en.wikipedia.org/wiki/Email_authentication

   Email authentication, or validation, is a collection of techniques aimed at providing verifiable information about the origin of email messages by validating the domain ownership of any message transfer agents (MTA) who participated in transferring and possibly modifying a message. The original base of Internet email, Simple Mail Transfer ...

7. Check verification service - Wikipedia

   en.wikipedia.org/wiki/Check_verification_service

   Check verification services can use a number of different methods or may combine a number to verify the validity of a check. Negative check database. A negative check database contains a comprehensive list of people who either wrote a bad check at a retail location, paid a bill with a check that was returned, also called "bouncing a check".