Track pageview from a vanity URL
We have a vanity URL, e.g. https://www.myvanityurl.com.
There is no page associated with the vanity URL. It's just a URL with the redirect. When someone goes to it, it immediately redirects to our site. e.g. https://www.mysite.com.
We cannot track traffic coming from the vanity URL and into our site.
Is it possible to track incoming traffic from the vanity URL to our site? How?

