YouSendIt Now Lets Yahoo Mail’s 310M+ Users Easily Share Big Files | TechCrunch

YouSendIt, the file transfer and business content collaboration service, has been trucking along of late, in spite of competition from plucky upstarts like Box. The startup has 98 percent of Fortune 500 companies on board in some form or another, and last we heard, YouSendIt had over 600K paying customers along with 30 million registered users.