<i>&quot;In 2013, we acquired Mailbox ... In 2014, we launched Carousel ... Mailbox will be shut down on February 26th, 2016, and Carousel will be shut down on March 31st, 2016.&quot;</i><p>Someone should track the lifespan of cloud products. It&#x27;s not long; the median is probably less than five years. Dependence on a cloud product is risky. They can go away so fast.