This module measures the rate at which text messages are exchanged, and their encryption status.
This module can leak information about your users’ behaviour to anyone who can access these statistics, so avoid enabling it on a server with few users.
With the plugin installer in Prosody 0.12 you can use:
sudo prosodyctl install --server=https://modules.prosody.im/rocks/ mod_measure_message_e2ee
For earlier versions see the documentation for installing 3rd party modules