Calls to action (CTAs) are important but they don't need to be perfect.
Start with something basic and then work to improve it as you go.
The simplest one is to just describe how your product helps your customer. For example:
Repeat Customer Insights helps you better understand your customer behavior so you can better market to them.
See? Simple can be effective.
Eric Davis
Market to your customer's timing
Figure out how long customers wait in-between purchases and you have a key component for your marketing timing. This is the basis of the Average Latency metric and Order Sequence Report in Repeat Customer Insights.