I didn't use Mailbox, but I think one of the key features is the snooze button, ...

		omaranto on Dec 7, 2015 \| parent \| context \| favorite \| on: Dropbox closing Carousel and Mailbox I didn't use Mailbox, but I think one of the key features is the snooze button, that makes an email disappear from your inbox and then reappear later. I think at the time Mailbox came out Google didn't offer that feature. The GMail webapp still doesn't have it but now Google Inbox does.

Outlook has it now too, which is surprising.