This Email Subject Line Cheat Sheet From Next After is a helpful resource.
Here's what they have to say about this resource:
The subject line is one of the most important variables that you can use to influence opens and engagement with your nonprofit emails.
But what does it take to write a high performing fundraising subject line?
An analysis of 80 nonprofit-specific email subject line experiments has revealed 5 proven mental levers that can lead to more opens, clicks, and donations.
This free subject line worksheet will help you utilize these 5 mental levers every time you sit down to write a subject line for your email – even if you don’t consider yourself to be a great copywriter or wordsmith.