This actually happened to me a few years ago when I closed my consulting company. My bad, I know. My domain was taken over by someone in Vietnam. Back then, he was actually able to see my old emails via the Google Apps. Grandfathered free Apps accounts was a big part of the value proposition. He demanded $500 to delete my emails and docs. I offered $50 for his trouble since I recognized that I was at least partially at fault but he refused. To his bad luck, one of my main clients was Google itself. I reported him via my internal connections and the next day got the following email: "Oh my G-d, all forty of the domains I bought got Google Apps cancelled".