What is it?
This simple plugin, will send ALL users joined on your site, a PM in which you wrote.
How to install?
Install like any other simple plugin not requiring tags or SQL:
Unpack, upload the contents to: plugins/masspm/files.....
Then install the plugin via the Administration Panel.
How to Use?
Simply go to:
http://yoursiteurl.com/plug.php?e=masspm
Type the Title of the PM
Then the PM Message
[user] => Will display username for the user receiving the PM
[userid] => Will display...