The original inspiration and example featured on the website was from a blog post on cold "welcome" email copy: https://www.gkogan.co/blog/increase-reply-rates/

The original inspiration and example featured on the website was from a blog post on cold "welcome" email copy: https://www.gkogan.co/blog/increase-reply-rates/ https://www.gkogan.co/blog/increase-reply-rates/. I'd love to test it on more marketing emails, or content marketing -- these seem to be the two applications with the most direct ROI.