Prevent Users from Triggering their Own Email Open

Google Admin needs to login to https://admin.google.com, set Image URL proxy allowlist, and save.

1. Go to Gmail -> Apps -> Google Workspace -> Settings for Gmail -> End User Access
2. Click Image URL proxy allowlist
3. Enter cirrusinsight.com/ (don’t forget the “/”)
4. Click Save.

For all users:

1. Logout from CI
2. Logout from Gmail
3. Close Gmail tab
4. Open a new Gmail tab
5. Login to Gmail
6. Login to CI