YouSendIt Raises $15 Million Series D

File sharing service YouSendIt has closed a $15 million Series D funding round led by Adams Street Partners, with existing investors Emergence Capital, Sigma Partners, and Alloy Ventures also participating. Robin Murray, a partner at Adams Street, will become an observer for the company’s board of directors.

YouSendIt’s core product allows users to easily send and receive files and folders as large as 2 gigabytes in size (rather than send the file itself via email, you send a link to the file that is hosted on YouSendIt’s servers). The service continues to grow, with 300,000 new registered users a month, and CTO Ranjith Kumaran says that the company is doing well at monetizing its freemium products: the site has over 215,000 paid users, all of whom are subscribed to plans that run $9.99 per month and higher.

Kumaran also says that the company is seeing success in the enterprise, which YouSendIt has worked toward with features like Outlook integration and various certifications. The company is looking at using some of the money for acquisitions, in addition to using it to boost growth and market share.

YouSendIt previously raised a $14 million Series C round in July 2008, and has raised over $53 million to date. The company recently named former Netflix VP of Finance Renee Budig as CFO.