Seals have been used for thousands of years, but wax seals weren't used until the Middle Ages (sorry for the grade school flashback). It was even later than that when they were used in private correspondence. Because wax seals had to be broken to open an envelope, they served as evidence that the envelope was tamper-free.
Our first experience with wax seals was opening wrapped gifts from our local jeweler and Cartier. The wrapping felt that much more luxurious with a wax seal. On gifts and packages, wax seals can be used to hold together ribbon or twine. On invitations, you put the seal at the point of the envelope flap. Your guests will appreciate the extra step you took in preparing your invitations, and the nostalgia and luxury associated with wax seals will leave your guests with exactly the impression you're looking for.
Some invitation companies will do wax seals for you, but it's incredibly easy to do yourself. You can find custom wax seal stamp vendors online and through Etsy. If you're looking for a single-letter monogram or a shape, stores like Paper Source and Michael's cary a variety. For an Indian wedding, we love the idea of a Ganesh or Om! All you need for this project is sealing wax in whatever color you want, a candle or lighter, and the seal itself.
Take a look at our step-by-step process on making wax seals below! We used this fleur-de-lis seal and this wax.