A simple but important topic!
.mail is a top-level domain (TLD) that is used to identify email addresses. It is one of the most widely used TLDs, and is often used in combination with other TLDs to create a fully qualified domain name (FQDN) for an email address.
For example, the email address [email protected] uses the .com TLD, but the @ symbol separates the local part of the email address (in this case, john.doe) from the domain name (in this case, example.com).
The .mail TLD is not as commonly used as some other TLDs, such as .com, .net, or .org, but it is still used by some organizations and individuals. It is often used to create a more specific or branded email address, such as [email protected].
It's worth noting that the .mail TLD is not as widely supported as some other TLDs, and may not be recognized by all email clients or servers. However, it is still a valid TLD and can be used to create a unique and memorable email address.