Support
Questions, bug reports or feedback about TestMQTT? Send us an email — a real person on the team reads every message.
Email our support team
Write to the address below with a short description of your problem. Click the address to open your email app, or copy it and paste it into any email client.
support@testmqtt.comHelp us help you faster
Include as much of this as you can in your email:
- The broker URL and port you are connecting to (e.g. wss://broker.emqx.io:8084/mqtt)
- The client you use: the TestMQTT online client, a tool, or a library and its version
- The exact error message or MQTT reason code
- What you expected to happen and the steps to reproduce it
- A screenshot, if the problem is in the browser
Quick answers first
Many problems are solved in a minute with one of these:
Support FAQ
What can TestMQTT support help with?
Problems with the TestMQTT website, the online MQTT client and the free tools, bug reports, feature requests and general feedback. We also try to point you in the right direction for broker connection problems.
Can you fix a public broker that is down?
No. Public brokers such as HiveMQ, EMQX and test.mosquitto.org are operated by their own owners. If one of them is unreachable, try another broker from the list or contact its operator.
Is support free?
Yes. Emailing support@testmqtt.com is free, like the rest of TestMQTT.