How to set a Returnpath in SMTP email sending

Question

I’m making a console that sends emails.

I need the emails sent with error to return to another email (other than the one sent).

I managed to set the ReturnPath in the header email, but it didn’t work.

I’m using the library: System.Net.Mail.

Creation of my e-mail message:

Note that the Return-Path changed, and is different from the email you sent.

E-mail you sent:

I tried to put right into the header, but then the Return-Path neither changes.

mail.Headers.Add("Return-Path", "[email protected]");

Answer 1

You should add a header correct in the message, something like that:

mail.Headers.Add("Return-Path", "[email protected]");

I put in the Github for future reference.

The Sender That’s not it, actually he’s the From.