Mark a message as read or unread
    - In theBlackBerry Hub+Inbox, do any of the following:- To mark a message as read, touch and hold a message. Tap > Mark read. > Mark read.
- To mark a message as unread, touch and hold a message. Tap > Mark unread. > Mark unread.
- To mark all messages before a specific date as read, touch and hold a date bar. Messages that you sent or received before that date are highlighted. Tap > Mark prior read. > Mark prior read.