This external provides automatic private conferencing.
Put into the "Private conferences" folder
users files with all the addresses of the various conferences.
If you post a message to a private area without the group flag, if the subject is equal to one of the users files into the folder, a new group is created to send to all the others the same message.
This portion of software is free.
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Example.
I chat via matrix with my betatesters this way:
Users file name: "Pizza betatesters"
Into the file: Ferruccio Muran,2:333/1.2001
Roberto Ferrara,2:333/1.6
Vittorio Vella,2:333/511.200
Then, when I write a message to someone with the subject "Pizza betatesters", before the export time, a group of the previous users is created and the message is sent to all.
You'll notice that this works even if I REPLY to a message with this subject without altering the subject itself. Also, to chat, every partecipant must have this extension installed. The "Pizza betatesters" file of Ferruccio Muran will be: