Always ask for a seed test to see if he can hit your emails upfront.
Set up some tough ones like AOL, HOTMAIL, YAHOO, don't settle for that "GI" general Internet crap.
Is this spam mailing?
Which could have serious repercussions for all involved.
Verify that he is Can Spam compliant.
Just because he clicks the button is no defense if you were to get sued for non Can Spam compliance.
They (anti's, FBI, FTC, ISP's, Microsoft, Yahoo, AOL) will track your links, money trails, and emails looking for you.

Get a contract in writing where he states his Can Spam compliance and practices.

Isn't this Jaeden's partner ?