matrix platform allows you to deliver notifications from Home Assistant to a Matrix room. Rooms can be both direct as well as group chats.
To enable Matrix notifications in your installation, you first need to configure
the Matrix component. Then, add the following to your
# Example configuration.yaml entry notify: - name: NOTIFIER_NAME platform: matrix default_room: ROOM_ID_OR_ALIAS
The target room has to be precreated, the room id can be obtained from the rooms settings dialog. Rooms by default have a canonical id of the form
"!<randomid>:homeserver.tld", but can also be allocated aliases like
"#roomname:homeserver.tld". Make sure to use quotes around the room id or alias to escape special characters (
#) in YAML. The notifying account may need to be invited to the room, depending on the individual rooms policies.
To use notifications, please see the getting started with automation page.