Instead of four all-encompassing options (Real-time, Daily Digest + Important Updates, Digest Only, None), I would suggest rehashing the "Manage your Email Preferences" page to present a check box for each category of message: character approval/denial; beginning of new scenes; character edits; new comments; new moves; etc. Un-checking the box beside any one of these options would cause the game to cease sending emails for that specific type of event. It would also be useful to have a box that could toggle on/off the digest option; if the "digest" box were checked, all of the day's notifications would arrive in one email.

Additionally, I would suggest adding a "Disable email notifications from this game" check box to the main page of each game a player is in, allowing them to disable notifications entirely for individual games. This would reduce unwanted email clutter, for example if a player is in both a one-scene-per-day game and a one-scene-per-week game they may want notifications from the former but not the latter.