Overview: In some cases, certain email clients will not pass through the entire login URL when clicked from the body of an email. As a best practice, ensure that the full URL is also included on email campaigns to allow users to copy and paste the link into their browser. Some email programs may truncate the login link.

Example: Hotmail will truncate a URL if it has a "?". Thus, everything following the "?" will not be passed and the following error may appear.