This is a Microsoft feature (https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/safe-links?view=o365-worldwide)
"As long as Safe Links protection is turned on, URLs are scanned prior to message delivery, regardless of whether the URLs are rewritten or not. In supported versions of Outlook (Outlook for Desktop version 16.0.12513 or later), unwrapped URLs are checked by a client-side API call to Safe Links at the time of click."
HOW DO I SEE THESE API CALLS IN ACTION TO ENSURE THIS WORKS?