Very helpful app that provides functionality that you would think should be built into Shopify. This app enabled us to create an email focused on buyers of a specific selection of products. It does exactly what it claims to do.

A pretty good app does exactly what we need it to do. This app allows us to group our customers by products purchased so we can more effectively retarget customers. Support is a little slow but very helpful so it's great. Use Cohorts + Shopify Email Automations for a cheap yet effective solution from expensive email services like Omnisend and Klayvio (Don't invest tons of capital into emails because they aren't that effective v.s. SMS).