Verified mail

You're referring to a "verified email" or "verified mail"!

A verified email is an email address that has been confirmed to be legitimate and authentic by the email provider or a third-party verification service. This is often done to prevent spam and phishing attacks, as well as to ensure that emails are delivered to the intended recipient.

Here are some common ways to verify an email address:

1. Domain-based Message Authentication, Reporting, and Conformance (DMARC): DMARC is a protocol that helps prevent email spoofing by verifying the authenticity of an email sender's domain.
2. Sender Policy Framework (SPF): SPF is a protocol that helps prevent email spoofing by verifying the IP addresses that are authorized to send emails on behalf of a domain.
3. DomainKeys Identified Mail (DKIM): DKIM is a protocol that helps prevent email spoofing by verifying the digital signature of an email message.
4. Email verification services: There are many third-party email verification services that use various methods to verify the authenticity of an email address, such as checking the email address against a database of known spam traps or verifying the email address through a confirmation process.

Verified emails are often marked with a special symbol or indicator, such as a checkmark or a green tick, to indicate that the email address has been verified. This can help increase the trust and credibility of the email sender and reduce the risk of spam and phishing attacks.

In summary, a verified email is an email address that has been confirmed to be legitimate and authentic through various methods, including DMARC, SPF, DKIM, and email verification services.