success when the response status is successful, or fail otherwise. It checks reachability from the test service at that moment. It does not inspect page content or determine whether a URL is safe.
Check a link
1
Enter the URL
Enter an HTTPS URL. If you omit the scheme, the tool adds
https:// before sending the request.2
Read the result
A
success means the destination returned a successful response. A fail can mean a non-success HTTP status or a connection problem. Check the link in a browser when the result differs from what you expect.3
Check the recipient journey
For a campaign link, open it in the same context your recipient will use. Confirm the page content and any required sign-in or redirect behaviour separately.