Download !exclusive! Mqttbox May 2026

: Use the "Publish" section to send data to specific topics. You can set the Quality of Service (QoS) levels (0, 1, or 2) and toggle the "Retain" flag.

For the most robust experience, downloading the desktop version is the best route. download mqttbox

: Click on the "Create MQTT Client" button. Configure Settings : MQTT Client Name : Give your connection a recognizable name. : Use the "Publish" section to send data to specific topics