someone get ben chestnut from mailchimp there. they're based in ATL, have a startup integration (w/ mailchimp) fund currently going[1], and ben is one smart cookie[2].
[1]http://www.mailchimp.com/blog/mailchimp-launches-1-million-i...
[2]http://www.mailchimp.com/blog/going-freemium-one-year-later/