In Elgg 3x, how to adjust default Notification settings

In Elgg 3x, how to adjust default Notification settings for all site members ? How the site super admin, for example, can turn off Email Notifications and instead use the Elgg Messages / Notifications instead ?

  • I don't know if a plugin already exists (for Elgg 2.x) that would allow to configure notification settings for all users. There's https://elgg.org/plugins/814747 but it hasn't been updated in a very long time and most likely requires some updates for Elgg 2.x (and then 3.x). I have https://elgg.org/plugins/869366 for Elgg 2.x that turns off (only) email notifications settings but does this on login of users rather than allow for changing the settings in bulk (and does not handle on-site notifications at all).