The link URLs that appear in email broadcasts (when readers hover on a hyperlink) look terrible. The is not appealing. Is there any way to make them more pretty?

Many newsletters have underlying URLs that include a custom domain name, even if they still refer back to the email platform. 

I'd like the link URL to look something like this:;sfjksjkjsk1234

Is that possible?

Or is it possible for me to truly link to my website, i.e.;dkfj123?

Thanks for your help.