Previously, there was an email address used for Disneyland dining reservations, and this will no longer be used as of 10/3/2013 as its being replaced by the (better and more efficient!) online system. Guests can still call to make reservations if they have questions (or if they would prefer not to use the online system)
This new system includes dining reservations for restaurants in both the Disneyland and California Adventure Parks, and Downtown Disney and Disneyland Resort Hotel restaurants as well (A credit card will be required when making reservations for table service dining). I think this is a great step forward for Disneyland, and I believe it will help control the flow of diners in the Disneyland restaurants, and will also help ensure you are getting the meals you want while on vacation!
I highly recommend you utilize this system when planning your next Disneyland trip, it’s easy, fast, and a great way to help you organize your days in Disney!