Promising New Customers
Customers who are fairly new to the store but they are not brand new. With the right marketing, they could develop into more loyal segments buying frequently.
They ordered a little time back that a store might consider dropping hints and incentives about their next order but not enough to do a full marketing blast. Make sure these customers are getting regular 1st Purchaser series emails. Also, offer products similar to their first purchase to stimulate a second purchase.