What is birth_message and will_message in MQTT and what are they use for?

[123 (Taras)]

@ohadbenita

I’ve connected to the MQTT broker to check whether there are retained status messages and found out there are

Publish an empty-string to the topic, with retain=true, and the MQTT broker will delete the topic and its message.

@gpbenton showed an easy way to do that in this post:

MQTT - How to remove retained messages?

Just as an alternative, you can use the mqtt.publish service from the services developer tools page. [image]