My co-worker and I both use Mailbox on our phones, and have been using the desktop app as well. However, the new update for the desktop app has been extremely disappointing. The concept of "swiping" has disappeared, and the layout is horrific, unfortunately. I'll still be using Mailbox on my phone, probably, but am looking for a good alternative to Mailbox for my laptop.
It's a shame for sure. I've been using Mailbox's beta for ages!