I generally use the front page's RSS feed to keep abreast of all the hot news that is apparently simply much too hot for email to handle. (http://www.gog.com/en/frontpage/rss
) It has, so far, kept me up to date on all the wonderful contests, as well as the new releases and crazy deals
I additionally use Google's RSS service, Google Reader
, for GOG and all my other feeds, FYI. It costs no money, and makes it easy to track all my things across multiple computers.
I imagine there are a number of ways to get an RSS feed mailed directly to your inbox, in case you wish to keep using it that way. Google brings up
several services which claim to do exactly that, although I have no way of knowing or recommending which of them might do what you want, and which might use your information to conjure a demon from the 4th Circle of Hell.