3 ms·I have never heard of Mailbox before, but I have heard of LinkedIn.by mey 13y agoI have never heard of Mailbox before, but I have heard of LinkedIn.ZaAaV 13y agoMailbox is part of Dropboxtannerc 13y agoWorth noting is that they originally were not. http://techcrunch.com/2013/03/15/mailbox-cost-dropbox-around-100-million/ http://techcrunch.com/2013/03/15/mailbox-cost-dropbox-around...