Dropbox_has announced that the Android version of its popular email client Mailbox will arrive today. The company also showed off a Mac version of the app, which is currently accepting beta signups. Also new to Mailbox is an auto-swipe function that can learn from individual archive and snooze actions in order to process similar emails in the future. Mailbox launched early last year to a lengthy reservation list. Within weeks, Dropbox stepped in to acquire the company in order to help it scale.