You split your email subscriber list into “cold” vs. “warm” leads so you can compare similar groups of customers in this test. You prepare two versions of your email—one with the normal subject line, and one with a much shorter, punchier subject line. You send half of your cold leads the normal subject line and half of your cold leads get the new, exciting subject line. You also send half of your warm leads the normal subject line, and the other half get the new subject line.
Hello Steven, first of all I want to thank you for posting such a informative article. Email is an essential part of our digital life. I didn't have any prior knowledge about email marketing before reading this article. But frankly sepaking now I am keen to know more about email marketing. Informations , data about email marketing and visulization style which are used, makes this article more attractive. Thank you for putting such effort.