Behalf of mail

I think you meant to type "on behalf of mail". Here are a few possible meanings:

• On behalf of mail: This phrase is often used to indicate that someone is acting as a representative or agent for a postal service or mail organization. For example, "I'm writing to you on behalf of the US Postal Service to inform you of a change in our delivery schedule."
• On behalf of mail: This phrase can also be used to indicate that someone is sending a message or communication on behalf of a postal service or mail organization. For example, "I'm sending this email on behalf of the mailroom to inform you of a delay in delivery."

If you could provide more context or clarify what you mean by "on behalf of mail", I'd be happy to try and assist you further!