I think it would be great to be able to Selectively include or exclude extensions that send notifications when the extension changes registration status. (Settings/Email/Notifications) Reasons: 1) 3CX Phone Users are not always registered or connected and therefore constantly show notifications on Registration and De-Registration. 2) System reboots send a huge number of extension notifications. 3) System Extensions send notifications too and this is not needed or desirable. The Extension Notification of a Change is very useful, but it needs to be more selectable.