eBay won't send any message with an email address in it.
Just click 'Contact seller', write your message and hit send. It should show in your sent messages after that. You will get a copy to YOUR registered email address if you check that option (I don't - I get enough spam from eBay as is, I don't need it from myself).
Remember - the seller might have a life or a job and might not be on the computer/eBay 24/7.
Ps. You don't need to date your post, the board system does that.
