First, EA Upgrader is not available yet. I don't have any download link to post here for anyone to test it. So if I don't have your email address, how can I notify you when it's available for download? Alternatively, you can subscribe to RSS feed of this thread--but many visitors don't even know what RSS is about, not to mention how to use it.
Ok, the EA Upgrader Mailing List found in my first post is for notifying testers only. I don't send unrelated fxfisherman newsletters to whoever in the testers list. It is different from registering for an account. By registering an account, you'll receive periodic newsletters which you can unsubscribe any time you like. The unsubscribe link is inside every newsletter; it only takes a mouse click to unsubscribe yourself forever.
How frequent newsletter is sent? For two months now, I sent only two newsletters. One is about New Economic Calendar and another one is about my trading system for the calendar. The plan is sending significant updates twice a month. You can opt out any time by clicking the unsubscribe link inside the newsletter.