Call to mail

I think you meant "call to mail"!

A "call to mail" is a term used in the context of email marketing and direct mail marketing. It refers to a specific action or instruction that is included in an email or direct mail piece, encouraging the recipient to take a specific action, such as:

The goal of a call to mail is to prompt the recipient to take a specific action, which can help to drive conversions, generate leads, or build relationships.