Front End PM is a Private Messaging system and a secure contact form to your WordPress site.This is full functioning messaging system from front end.
The Private Messages For WordPress allows users of WordPress blog send private messages (PM) to each other, just like in a forum.
The original Project Status. Replaced by Project Panorama Lite Plugin. A responsive visual project tracker which shows percentage of completion, major
This plugin only allows friends and site administrators to send private messages on your BuddyPress site.
This plugin enables the site admin or users to restrict who can send private messages.
CubePM is a private messaging system that integrates right into the frontend of your site.
WordPress plugin that makes project management easier.
Simple Personal Message is a private and secure multi-user and group based messaging system.
Allow members to send private messages only **if** the recipient is following them. Requires the BuddyPress Followers plugin.