Enclosure cards are essentially additional cards included in a wedding invitation mailing that provide information to your guest about the wedding day. There may be separate enclosure cards providing details about the ceremony, reception, directions, and overnight accommodations. Or one enclosure card can incorporate all the additional wedding details. The etiquette followed depends on how formal you would like your wedding invitations to be. Just make sure your enclosure cards are smaller than your wedding invitation card so that all the items fit in the outer mailing envelope.The wording on the enclosure cards does not have to follow any specific guidelines. Make sure the information you include on your enclosure card is clear and accurate. Sometimes a map or info graphic may help to provide your guests with the essential details of your special day.For all of our featured wedding invitation styles, available enclosure cards are shown in the matching products section. Zazzle. the printer, provides an easy to use real time customization interface to help you create the enclosure cards to suite your needs. You can even upload maps and graphics you have created to add to your enclosure card.