Extension:EmailAllChanges

The EmailAllChanges extension adds a preferences checkbox allowing users to have all changes to pages on the wiki emailed to them. It works by changing the value of $wgUsersNotifiedOnAllChanges.

$wgEmailAllChangesRight
Set to whatever user right you want users to have to possess in order to use the feature. Defaults to 'block' (which would limit it to sysops on most configurations).