Mailbox has updated its popular iOS email client this afternoon, bringing the app to version 2.1. The update is fairly significant, as it adds new spam options, Passbook support, and support for several new languages.
With 2.1, it's now possible to print your emails, mark them as spam or unread, and favorite them by clicking on the three little dots at the top of a thread view. You can also now add items directly to the Passbook app...