Save-the-dates The “save-the-date” is your first announcement to the world that you are getting married! Let your guests know you when and where - at this point, the city and state names are enough information.
Give your guests four-months advance notice, especially if your wedding is during the summer.
Number of invitations to be ordered Believe it or not, 99 percent of couples make the mistake of ordering the same number of invitations as their number of guests. The rule is simple: count everyone on your guest list and divide by two - the reason is that you are inviting at least two people per invitation (sometimes this will be a couple and sometimes this will be a friend + one guest).
RSVP's: Mail or Internet?
Traditionally, an RSVP card with a stamped envelope should accompany your invitation so your guest can send a response. If your wedding is within the United States, this is the rule of thumb to follow. Should you have a lot of international guests potentially attending your wedding, the better idea is to have them RSVP via your wedding website.
Wedding Stationery : JP Stationery