The messaging platform is shared with the Trailforks messaging system. You can send a message on Trailforks and see that message thread in your Pinkbike inbox.
How do I message other users?
You can find your inbox in the link on the top right-hand corner next to your profile dropdown. From this page, you can compose a message, receive messages, archive, or delete messages you have received or sent.
If you are viewing your messages in your inbox, you are able to compose a message to a user by filling out their username in the 'to' field. If you are viewing a user's page, you have the option of sending that user a message directly from their profile page.