- Matt Shaw. The State of HTML Email in WordPress. delicious brains, 2019.
- Josh Pollock. How to Test the Emails WordPress Sends. torque, 2018.
- Andrew Lima. How to Change the Default From Email for WordPress. yoohooplugins, 2018.
- Editorial Staff. How to Set up WP Mail SMTP (Ultimate Guide). wpbeginner, 2018.
- Tom McFarlin. How to Programmatically Send Email in WordPress. 2013.
- Tom McFarlin. Creating Customized Comment Emails. envatotuts+, 2012.
- Part 1: Understanding the API.
- Part 2: Building a Plugin.
- Tom McFarlin. Change the Email Sender in WordPress. 2012.