As someone who sends 3-5 marketing emails a week to our various lists, writing good subject lines is something I think about a lot. Which is why I found this infographic from Litmus on writing the perfect email subject line so helpful.
Click the infographic to view the full size version:
![Email subject line infographic](https://smileycat.com/wp-content/uploads/2016/05/subject-line-infographic-540x1874.png)
I’m especially interested in the recommendation that you keep subject lines to under 50 characters for higher click rates, with the optimum length being somewhere between 16-39 characters. Now that really is short and sweet!