We're offering this service at Custora. You upload as many creatives as you would like, and then our product figures out who and when to send them. Say you hav

We're offering this service at Custora. You upload as many creatives as you would like, and then our product figures out who and when to send them. Say you have emails suggesting TASK X, TASK Y. You upload the four creatives, and we can tell you that TASK X worked for new users and inactive users, and TASK Y worked for active users. We also close the loop and look at the effect of the email actual actions (sign-ins or purchases depending on the business) rather than just email opens. The goal is to send fewer, but more relevant emails. Rather than emailing everybody every week, just send emails to the customers when the become inactive.