TECH
03/15/2013 04:13 pm ET

Dropbox Acquires Popular Mailbox App

Just one month after a release that generated a waiting list hundreds of thousands of people long, the app Mailbox has been acquired by cloud sharing service Dropbox. The companies reported the deal to the Wall Street Journal on Friday, emphasizing that they would remain separate apps as Mailbox's team of 13 joins Dropbox. Niether party disclosed the amount of the deal.

"To be clear, Mailbox is not going away," wrote Mailbox CEO Gentry Underwood in a blog post on Friday. "The product needs to grow fast, and we believe that joining Dropbox is the best way to make that happen." Gentry told WSJ that Mailbox -- an email-optimizing app that promises to help users drop their inbox down to zero -- has racked up 1.3 million reservations since its launch.

Check out the full WJS report here.

The waiting list to download Mailbox helped hype the app, and Gentry admitted to WSJ that the group is "struggling to keep up with the demand from those who want to use it." With several years of growth and a growing staff of nearly 250, Dropbox seems prime to help Mailbox manage their overflow. Dropbox currently serves over 100 million users and is valued at $4 billion by investors.

"Like many of you, when we discovered Mailbox we fell in love—it was simple, delightful, and beautifully engineered," Dropbox CEO Drew Houston wrote in a blog post. "Whether it’s your Dropbox or your Mailbox, we want to find ways to simplify your life."

Dropbox's previous acquisitions include Audiogalaxy, a cloud-based music app, and Snapjoy, a cloud-based photo app.

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