Overview
If you know a particular email sender is trustworthy, you can add the address to your personal Safe Senders List in the Proofpoint Quarantine to improve delivery. The Quarantine is available through the top left Microsoft App Launcher or directly through https://quarantine.uidaho.edu/.
Details
Step 1:
Open a browser and navigate to mail.uidaho.edu. Sign in with your username if prompted for credentials. Click the App Launcher "waffle" icon in the upper left.

Step 2:
In the menu that appears click "More Apps".

Step 3:
Type "quarantine" in the search box and click the Quarantine application.

Step 4:
The quarantine app appears. Click Lists in the lower left corner.

Step 5:
Click "Safe Senders List" on the left hand side and click "New".

Step 6:
Enter the email address you want to mark as a Safe Sender and click "Save".
