MassMessage is an extension that allows a user to send a message to a list of pages through a special page and the job queue. It is intended to replace [[m:Global message delivery]].
More details are available at [[mw:Extension:MassMessage]], and there is a test instance at http://legoktm.instance-proxy.wmflabs.org/wiki/Main_Page
Version: wmf-deployment
Severity: enhancement
URL: https://www.mediawiki.org/wiki/Extension:MassMessage