Apr 15, 2006

MailChimp Study: Best and Worst Subject Lines by Open Rate

How do you write an email subject line that makes people open?

We just did a study where we analyzed over 40 million emails sent from MailChimp, and we compared the subject lines from the campaigns with the best open rates (60-80%), and the campaigns with the worst open rates (1-14%).

What did we find? The best subject lines simply tell what’s inside. The worst subject lines sell what’s inside.

See some real examples of the most effective subject lines, and some examples of the stinkers (don’t worry, we disguised all company names)…