Why can't I use my custom domain as the Primary URL?

Actually, you can use a custom domain in the Primary URL but you must be sure to include a valid link ID with it, such as the link ID /movies in this URL:

http://$linkdomain/movies

Because the link ID /movies follows the custom domain $linkdomain/, ClickMagick knows exactly where to redirect incoming clicks to.

The problem occurs when you don’t include a link ID:

http://$linkdomain

Without a link ID, ClickMagick doesn’t know where to redirect clicks to, creating an error condition.

Very simply, if you’re going to use a custom domain in the Primary URL of a tracking link, make sure that you remember to include a link ID so that ClickMagick knows exactly where to redirect incoming clicks.

If you’re unsure about what a link ID is or why you need one, we have an FAQ that will walk you through the steps for creating a tracking link:
 
   How do I set up a very basic tracking link?