Startup Idea: User Retention as a Service

Sounds like an useful service. Though, I'm not sure whether email bombarding is a good idea. You used the example of AppSumo but I unsubscribed after 3 emails sent too close together. Most people don't unsubscribe but rather just ignore the email.

I don't need an email every time a small feature is released, or pushing me to come back... there's a reason I don't revisit, and it's not because I forgot. What I like are emails that give me something of value whether it's free content, a story, a free tip, etc. Teach me something new.

Someone needs to build this. Now.

What would you say to someone that refuses to email users at all and even rejects the idea of collecting email addresses at signup? They think asking for email addresses and using them for anything is only for spammers. Sadly they also have a retention problem.

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.

So one YC startup (Picplum) is begging for a service that another YC startup (Custora) has evidently already built and is publicly promoting?

Maybe YC is too big :)