You can send a new message to a specific user by searching about him using Email, Name or Username.
1. Go to messages.
2. You will find all your previous conversations.
3. Send a new message by clicking on Compose Message button on the top left.
4. Click on Search users to search about the member you would like to message using Email or Name or Username(*).
5. Write your message on the Message box.
6. Click Send Message button.
(*) Searching about member using Email, Name or Username.