Introduction
This article walks you through the issue related to notifications
Issues
Case 1:
Whenever you have set up the notification setting in the User Group you also need to checkmark the box of Use Members’ Individual Email Addresses (As shown in image below) if you want to send the notification to all the users who are part of a user group.
Case 2:
While deploying the Workflow or a Pipeline if you have check marked the Send notification to me only box, it will disregard the existing notification setting of the user group and only notify you.
Hope this article helps you out.