Have Replies to Your Message Sent to Another Person

If you're lucky enough to have a personal assistant, take advantage of it. If you're sending out invitations to a party via e-mail, have the RSVPs sent to another address, whether it's your assistant's or an e-mail alias set up specifically to track your party guests.
Click New Message and compose your invitation. Click Options, and check the box next to Have Replies Sent To. Type the e-mail address, or click Select Names and select the name and e-mail address from your Address Book. Finally, click Close. Its as easy as that .