From what I have heard, Inbox has been conceived by some of the guys behind Sparrow (another Google's acquisition). There is a good number of simple acqui-hi

From what I have heard, Inbox has been conceived by some of the guys behind Sparrow (another Google's acquisition). There is a good number of simple acqui-hire, but it looks like from time to time, Google also tries to let these people work on their field of expertise.