Test different subject lines, email bodies, and calls-to-action to scientifically discover what drives the most replies.


Optimize every part of your campaign with powerful testing tools.
Create multiple variations of your emails and let our system distribute them evenly to your prospects.
Watch the results roll in live. See open rates, reply rates, and click-through rates for each variation side-by-side.
Once you have statistical significance, automatically switch all future emails to the winning variation.
Don't leave your success to chance. Test, iterate, and win.