Problem with Inbox

I keep getting this message in my email account aht is lined to this forum


Dear R. R. Wayne,
///////(name removed for security) has just tried to send you a private message. However, your private messages box on Bisexual.com has reached the specified quota. In order to receive further private messages, you must delete some messages. Please visit this page to do so:
http://www.bisexual.com/forum/private.php

All the best,
Bisexual.com
I have twice deleted allmessages in my Inbox, but that is not helping.Drew:HELP

You need to empty your Inbox and/or Sent Items box - they are full.

Go to Control Panel > Inbox and Control Panel > Sent Items.

- Drew :paw:

Thanks, Drew. I did not think about emptying the "sent messages.: