I would have guessed Mailbox could have been sold instead of shuttered. Maybe MAU has slid lately, but I thought they had a lot of happy users. On the other ha

I would have guessed Mailbox could have been sold instead of shuttered. Maybe MAU has slid lately, but I thought they had a lot of happy users. On the other hand, it's amusing to note the Valley inflation that has happened since Mailbox was acquired in early 2013. It was for ~$100M which seems like chump change in the Age of The Unicorn that we now find ourselves in.