BuddyPress.org

[RESOLVED for now]

There’s a suggestion here that selects “no” by default: https://wordpress.org/support/topic/plugin-group-documents-notification-disabled-by-default.

Didn’t work for me though. What I did instead is comment out the function that actually sends the email notifications in notificiations.php. Just add “*/” (minus the quotes) at the bottom of the file. Assuming that you haven’t altered the file in any way yet.