How do I check my URL'S?

URL Check

The URL check quickly and easily verify that the links and images in your mailing are retrieving images and web pages successfully. It should be noted that this feature should not replace manual testing of links and images. 

Success.  The URL returned an HTTP status 200, indicating content was returned successfully.
Warning. May indicate a temporary problem and should be manually verified before sending your mailing. The HTTP statuses returned include; 302, 301, 502, 503. This status can also indicate that there was a timeout after 30 seconds, or that there was a host or domain issue.
Error.  This can be caused by HTTP status 401, 403, 404, or 500.  This can also be caused if your URL is syntactically invalid.