Thread:Extension talk:MassMessage/Help re. Error: You do not have permission to create a list with this title./reply

Hi. To be able to create delivery lists, you need to have the "editcontentmodel" user right, which is not granted to any user group (including sysops) by default at the moment. We hope to make it so that sysops are granted the right by default soon, but for now you can work around the issue by adding

$wgGroupPermissions['sysop']['editcontentmodel'] = true;

to your LocalSettings.php. I've updated the documentation to clarify. Sorry about the confusion.