Hello valschroeder
Welcome to the wolfSSL Forums. Yes, wolfMQTT sounds like a great fit for your project!
We have lots of example projects in the library. I'm not sure what you mean by "manual work to handle incoming messages". The client subscribes to a topic and messages are received.
Could you tell us a bit about your MQTT project and where you are located for our support records?
Thanks,
Eric - wolfSSL Support