Add guests. Group them into parties. Assign them to the bride's or groom's side. Even specify meal preferences!
Centralize guest details by storing contact information. Out-of-town guests? Keep track of where they're staying too!
You can even keep track of all your gifts with my guest list. Have you remembered to send the Thank you cards?
RSVP responses are easy with the drag-and-drop interface. Use the summary for a snapshot of how many you've received.