I've spent hours trying to figure out the mail API with no success, and the unsubscribe link options don't seem to include what I want. What I want is simple. I want my unsubscribe link to include the email in the URL, so I can handle my own mailing list and save myself hours of headache. I just want www.mydomain.com/unsubscribe/{example.random.com} so I can send people to my website and handle my own database. Is this possible?