* Powerful features around modelling workflows * Simple interface to allow testing and promotion of workflows to production

Clear documentation, easy to implement, reliable notification delivery, very good customer support.

I appreciate how easy it is to get started using Knock. I found the documentation and examples very helpful. Knock provides a good out-of-the-box solution for in-app notifications, but there also seem to be ways to customize it as needed. I've also had a couple of interactions with Knock's customer support and got the answers I needed quickly.