When you start to improve anything, having a guiding question or two can help you focus on the important.
If you're trying to improve your customer loyalty, ask yourself:
"What actions am I taking that will make customers want to come back?"
Not what deals.
Not what campaigns.
Answer that and follow it up with "What actions could I be taking?" and you'll have a basket of ideas.
But if you need more, Repeat Customer Insights includes many more ideas and recommendations for your store, backed by your data and store performance.
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.