Kustomer

We have abandoned another very popular CSR system in Kustomer's favour, which was a great decision.
This app is flexible, tech support is always here for you, and new features are added constantly. Starting with filters and automation and ending with a smart chatbot (integrated into Shopify in the blink of an eye), we enjoy working with it.
Strongly recommend for all Shopify sellers. You should try, and you will never want anything else.