Disabling Emails I needed to do a lot of work on some posts on a collaboration system, and I didn't want any of the subscribed people to be notified, so I set out to disable all outgoing emails, because there was not an individual setting to disable them at the collaboration system level in 7.9.33.
Emailing Groups If you wish to email all the "Registered Users" - you will notice that it isn't listed in the admin-groups screen. So this is what you need to do: