As the Subject line is one of the factors that make the reader either open or delete the message, we’re always wondering about the best way to write the Subject line. In one of my latest articles I shared several tips on how to write the Subject line to increase the email open rate.
However, I don’t think we’ll ever find a definite answer what is good and what is bad with regards to the Subject line. This is because one thing may work well for one sender and it may not work for another sender in a different kind of email message. This applies to the personalization of the Subject lines too.