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, ensuring that the full URL is also included on the email campaigns will allow users to copy and paste the link into their browser as some email programs can truncate a link.

Example: Hotmail will truncate a url if it has a "?" in it. So everything after the ? will not be passed when the link is clicked.