Look at the top right of any page (when logged in) for a link to your PM inbox.
PM's are an integrated messaging system of this forum software where you can privately exchange messages with other forum members.
The amount of max. stored messages in your PM box depends on your user group:
Max. 100 stored messages
Max. 250 stored messages
Max. 500 stored messages
PM: Max. 1000 stored messages
Donate to become a member of a more privileged user group