glide.email.test.group.notifications system property and field in email propertiesIssue Some instances have an extra field in the Email Properties form and an extra property called glide.email.test.group.notifications. This would mainly be older instances (around 2014)This property points to a group of users who are expected to receive emails on dev/test instances, rather than the OOB test email address.The property name indicates that this is a ServiceNow OOB(Out of the box) created property but this is not the case. This works in combination with a Business rule that removes any email address that is not in the email test group. This Business Rule needs to be active for the functionality to work.ReleaseOlder environments (pre 2015?) mainlyResolutionEnsure that the appropriate Business rule called "Test Email" is active. If no Business rule called Test Email exists, check other non-OOTB(Out of the box) Business rules on sys_email.