Your host must be imposing it’s own from headers thus overwriting the ones created by plugin.
For most folks out there the From header would be the websites name and the Automated Reply Email.
These are 2 headers, the first is generated by my test server and the second is generated by your host.
Delivered-To: [email protected]
Received: by 10.58.50.10 with SMTP id y10csp152451ven;
Thu, 27 Jun 2013 07:51:24 -0700 (PDT)
X-Received: by 10.236.29.82 with SMTP id h58mr4820655yha.4.1372344684641;
Thu, 27 Jun 2013 07:51:24 -0700 (PDT)
Return-Path: <[email protected]>
Received: from iMac.local (06.27.07.51.24)
by mx.google.com with ESMTP id y27si1566466yhc.101.2013.06.27.07.51.24
for <[email protected]>;
Thu, 27 Jun 2013 07:51:24 -0700 (PDT)
Received-SPF: neutral (google.com: 88.12.12.226 is neither permitted nor denied by best guess record for domain of [email protected]) client-ip=88.12.12.226;
Authentication-Results: mx.google.com;
spf=neutral (google.com: 88.12.12.226 is neither permitted nor denied by best guess record for domain of [email protected]) [email protected]
Received: by iMac.local (Postfix, from userid 501)
id 184F44BD92A; Thu, 27 Jun 2013 10:51:08 -0400 (EDT)
To: [email protected]
Subject: Email confirmation from Easy Sign Up Test Site
Date: Thu, 27 Jun 2013 14:51:08 +0000
From: Easy Sign Up Test Site <[email protected]>
Message-ID: <bdabc88a0d89dc0767ce8b1afabeb442@localhost>
X-Priority: 3
X-Mailer: PHPMailer 5.2.1 (https://code.google.com/a/apache-extras.org/p/phpmailer/)
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/html; charset="UTF-8"
<p>Hi Rew R Thank you for visiting our website<br />
We hope that you found it informative.</p>
<p>Regards,<br />
<a title="Home Page" href="https://localhost:8888/new/">WP Dev site</a></p>
Delivered-To: [email protected]
Received: by 10.58.50.10 with SMTP id y10csp152625ven;
Thu, 27 Jun 2013 07:55:47 -0700 (PDT)
X-Received: by 10.68.108.163 with SMTP id hl3mr6478854pbb.160.1372344946557;
Thu, 27 Jun 2013 07:55:46 -0700 (PDT)
Return-Path: <[email protected]>
Received: from oproxy13-pub.unifiedlayer.com (oproxy13-pub.unifiedlayer.com. [69.89.16.30])
by mx.google.com with SMTP id bs5si1899182pab.343.2013.06.27.07.55.45
for <[email protected]>;
Thu, 27 Jun 2013 07:55:46 -0700 (PDT)
Received-SPF: neutral (google.com: 69.89.16.30 is neither permitted nor denied by best guess record for domain of [email protected]) client-ip=69.89.16.30;
Authentication-Results: mx.google.com;
spf=neutral (google.com: 69.89.16.30 is neither permitted nor denied by best guess record for domain of [email protected]) [email protected]
Received: (qmail 4668 invoked by uid 0); 27 Jun 2013 14:55:45 -0000
Received: from unknown (HELO box308.bluehost.com) (69.89.31.108)
by oproxy13.unifiedlayer.com with SMTP; 27 Jun 2013 14:55:45 -0000
Received: from localhost ([127.0.0.1]:51055 helo=box308.bluehost.com)
by box308.bluehost.com with esmtp (Exim 4.80)
(envelope-from <[email protected]>)
id 1UsDbt-0003Xu-D7
for [email protected]; Thu, 27 Jun 2013 08:55:45 -0600
To: [email protected]
Subject: Email confirmation from Doug Hanvey
X-PHP-Script: www.renewableenergywriter.com/index.php for 88.12.12.226
Date: Thu, 27 Jun 2013 14:55:45 +0000
From: [email protected]
Message-ID: <[email protected]>
X-Priority: 3
X-Mailer: PHPMailer 5.2.1 (https://code.google.com/a/apache-extras.org/p/phpmailer/)
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/html; charset="UTF-8"
X-Identified-User: {:box308.bluehost.com:mindfun3:box308.bluehost.com} {sentby:program running on server}
<p>Thanks for signing up for the newsletter. I hope you find it helpful.</p>
<p>Doug Hanvey<br />
The Renewable Energy Writer<br />
[email protected]<br />
(812) 322-6202<br />
www.RenewableEnergyWriter.com</p>
This being the case there is nothing I can do for you.