Meet the Man Who Sold a Month-Old App to Dropbox for $100M | Wired Business | Wired.com

Check the link below for a co-founder/CEO interview

"When Mailbox sold itself to Dropbox for a reported $100 million or so this March, the month-old iPhone app wasn’t even available to the public. People could download the email organizer, but using it required joining a mailing list that stretched to nearly 800,000 names at one point.
Mailbox was popular because it provided innovative new ways to organize and clear an inbox. Users can swipe a message to the left to “snooze” it, a command that instructs Mailbox to resurface the email after a set period of time. Other swipes — hard left, right, or hard right — archive, delete, or file messages."

Meet the Man Who Sold a Month-Old App to Dropbox for $100M | Wired Business | Wired.com