Your settings live at a personal link: look for "Change what lands on this calendar" inside any calendar event we created, or "Change my settings" at the bottom of any email from us. That link opens your own settings page, where you can switch committees, edit keywords, or stop everything. No password needed; the link itself is your sign-in, so don't forward it.
Lost every email and calendar event? Sign up again at the tracker home with the same address and your settings pick up where they left off after you confirm.