System is sending mail notification to suspended users (Provider).

By deleting the suspended user, mail notification stops. User can be delete by Admin Portal or using 3scale API. (If it's not acceptable to delete the user the only other known workaround is to log in as an admin user, update the password of the suspended user, unsuspend the user then log in as that user and disable all notifications in the notification preferences view then return the user to the suspended state)

1. Configure SMTP Settings on 3scale in case it is not configured yet
2. Create a New Temporary Email account (i.e using mailhog)
3. As an already existing Admin (Provider) user - User A - log into the admin portal and invite the new user (Provider) - User B - with the email created in the step above
4. User A should create some new Developer Accounts and Applications
5. User B will receive email notifications triggered by the above events
6. User A should suspend User B by using the Account Management API User Suspend (provider account)
7. User A should create a new Developer Account and a new Application
8. Observe that notifications are still received on the mail box of the Temp Mail account of User B