Ask HN: Do you A/B test email drip campaigns?

[xiaoyang88]

Are you a/b testing email drip campaigns right now? If yes, what tool are you using?

If no, do you want to a/b test email drip campaigns?

To clarify: A/B testing the whole campaign, not just components inside a campaign. I.e. ability to create multiple versions of a campaign and seeing which one performs the best.