Goal

Increase participation and collaboration by enabling direct, private communication among MDN users.

See SUMO's private messaging feature for an example of how this functionality might be implemented.

User stories

I want to send a message to another user who has given permission to receive messages.
I want other MDN users to be able to send me messages without exposing my email address on the Web.
I want to control whether other users can send me messages.
I want to control how I am notified about messages I receive.
I want to report and block a sender.
I want to reply to messages.
I want to archive, retrieve, and delete messages.
I want to send a review request to people who have expressed willingness to review articles about the topic my article is about.
I want to be able to report users who message me inappropriately.

I want to send messages to all members of my topic or locale "team". (future?)
I want members of my team to be able to message one another (or all members) easily, to encourage my team to work together.

I want to receive reports of abusive messaging behavior by users.
I want to appropriately handle reports about abusive messaging behavior by users. (Need to create a policy on how abuse will be handled. E.g., banning for obvious spam; otherwise, 3 strikes and you're out.)
(Maybe) I want to view messages that have been reported as abusive, so that I can take appropriate action on the sender.
(Maybe) I want to view any message as needed to maintain site performance and integrity (i.e., investigate suspicious activity).