Ari Stathopoulos

This plugin will allow you to change the email from address and name that WordPress uses by default.
It is pretty simple and straight-forward, no complicated functions and forms. 
On activation you should see a new menu in your “Settings” section called “Mail Change”. 
In that page you can define 2 fields:
<ol>
<li>email address</li>
<li>email from name</li>
</ol>
That’s all there is to it… have fun!

WP Mail Changer

This plugin will allow you to change the email from address and name that WordPress uses by default.

WP Mail Changer vs Post SMTP – Complete SMTP Solution with Logs, Alerts, Backup SMTP & Mobile App