Rather than sending emails (I don't get the emails either, plus I only check that mailbox once every few days), couldn't you notify members by PM's? Or would this be too labour-intensive?
If a non-Nation member got the link, would they be able to play it? If not, then why not post the link in the forum. Then you can continue sending emails, but for those who don't get the emails we can get in via the forum link.