Extension:MassMessage

The MassMessage extension allows a user to send a message to a list of users via special page "Special:MassMessage".

Configuration parameters
When posting messages, only post them in the specified namespaces.
 * Namespaces to post in

If you want users to be able to provide a link to a User: page, but have the bot post on their User talk: page you can define that here.
 * Namespaces to convert

What username the bot should post with. If the user already exists, the extension will take over the account. It will be impossible for users to rename the account.
 * Username

User rights

 * - Lets a user send out messages. By default assigned to the user groups "sysop" and "messenger".
 * - Lets a user send out messages to users on multiple wikis