Sending unique wedding invitations, chosen to reflect who you are as a couple, is a great way to 'introduce yourselves' to those guests who may not yet have met you both. Choose invitations that reflect your personalities, your future life together as a couple, or even a hobby the two of you enjoy together.
In addition, after the wedding is over, and your guests have gone home, they can save your unique invitations to remind them of the day. Your close family and friends should appreciate having another special reminder, particularly one that evokes memories not only of the wedding, but also of the happy couple. Distant relatives and friends are also more likely to keep your unique wedding invitation, as most people are reluctant to throw away anything unusual or special, so your invitation is sure to be saved.