I've read that email subject lines shouldn't be longer than 7 words, but should I follow a character limit? And what about adding punctuation?
I also know that you shouldn't use "Free" and "Buy Now" and other similar phrases in your subject lines -- is there a trustworthy guide of terms/phrases that, if used in your subject line, will get your marketing marked as spam?
November 10, 2010 6:06 AM
October 29, 2012 4:24 AM