Configure a Proxy allowlist for Image URLs

Access the Google Admin Console with an administrator account.

Go to the menu and look for the Apps option.

Then click on Google Workspace > Gmail and look for the menu item End User Access, which will be located to the right of the previously navigated menu and click on it:

Select the organizational units.

Look for the menu item Image URL Proxy allowlist:

Enter the allowed patterns for the image URL proxy. Matching URLs will be excluded from proxy protection. Finally, click on SAVE.