Damjan

Genesis Email Headers will allow you to customize the email headers for the sender.
Before use this plugin, you should to have installed Genesis 2.0 (or later). 
The email headers settings you will see at Genesis Theme Settings page.

Genesis Email Headers

mishalpatel

This plugin sets the PHPMailer Sender (return-path) the same as the From address if it’s not correctly set.

Fix Email Return-Path

Blatant copy of my plugin!

Simple plugin that sets the PHPMailer->Sender variable so that the return-path is correctly set when using wp_mail.

Genesis Email Headers vs Fix Email Return-Path