How to Banish Bad Subject Lines Forever

Wisdom from 100,000 Subject Lines

Much has been written about the need for 'deliberate practice' and how if you'd like to master a particular skill, that you'll need to expend 10,000 hours+ on it before achieving some degree of expertise.

That sounds like a lot of hard work, so we developed a system that will let you cheat.

We've taken over a 100K different subject lines that have been sent through our Send Check It service, extracted what made them tick and built a tool that you can use to evaluate your own subject line ideas before you send.