Notifications of things like new submissions can be controlled in in 3 ways:
- Go to Workflow Settings > Submissions and check off whether you want a copy of the Notification of Author Submission sent to the primary contact identified in Journal Settings.
- Individual users can visit their own user profiles, go to the Notifications tab, and check off what email notifications to receive (as you mentioned in your post)
- If you don’t want an email notification message to be used at all, you can disable it under Workflow Settings > Emails. Please note that if you, for example, disable the “submission ack” message, it will not get sent to editors, journal managers, or authors.
However, there is a bug identified with OJS 3.1 where even after un-checking these, journal managers and editors continue to receive notifications (see https://github.com/pkp/pkp-lib/issues/3770). It should be fixed in the next major release of OJS.
In terms of getting returns of invalid emails of users in the journal, you can stop these by disabling the user accounts so these users no longer receive announcements.
I hope that’s helpful.
Public Knowledge Project Team