Where: Return Path, New York
Why: Deliverability and reputation services company Return Path is not an ESP. That's one fact that Blumberg has helped propagate this year and in the past, but it's not the most important thing he's done. Instead, that would fall to Blumberg's task of helping ESPs and marketers understand what good e-mail is, why transparency is important and how to make it more accessible and deliverable. Just as important: Helping to create trust between anti-spam proponents and legitimate e-mail marketers who, in the past, have both feared and distrusted each other.