It is not possible for users to send private messages, the only option is that moderators send you messages. However, you can post on a user's wall located on their profile.
Tldr: This is an archived version of the DBD forum, it has all posts, comments and media. The archived data will be published at the end of October. This site is not in any way affiliated with or endorsed by Behaviour Interactive.
Comments
@Pet_The_Lizards is correct
It is not possible for users to send private messages, the only option is that moderators send you messages. However, you can post on a user's wall located on their profile.