would be good to add a description of your hack... not everybody here is a coder...

btw, this is not a good way to do things... this is not supposed to be a plugin, because the whole stuff is just sql queries to delete pms... it's not a function, or a addon, it is just queries that run when you install the plugin...

would be better placed in the Tutorials...

because written like this, someone that doesn't know exactly how to handle this tool will try by installing it, see no result, and 2 minutes later, everybody on the board will complain about lost pms...