Via mail means

"Via mail" is a phrase that means "by mail" or "through the postal service". It is often used to indicate that something is being sent or received through the mail, rather than in person or through another means.

For example:

• "I'll send you the documents via mail." (meaning you will receive the documents through the postal service)
• "The package arrived via mail yesterday." (meaning the package was delivered to you through the postal service)

In modern times, "via mail" is often replaced by more specific phrases, such as:

• "By mail"
• "Through the post"
• "By postal service"
• "By courier" (if a private courier service is being used)

However, "via mail" is still a common and acceptable way to refer to sending or receiving something through the postal service.