Traditionally, an outer envelope is used for the postal address and an inner envelope for handwriting the names of whom are invited. For example, the outer envelope may be addressed to your friend Jane Doe. Jane is not married and you want her to know it is okay to bring a guest. On the inner envelope, you would handwrite Jane and Guest. Another example would be addressing the outer envelope to your Uncle Bob and Aunt Rebecca Johnson. Because you want them to know their children are also invited to the wedding, you would handwrite Bob, Rebecca, Susan, Anna, and Ronald on the inner envelope.
Adding an outer envelope to your wedding invitation adds a traditional and elegant flair.
Outer envelopes are a traditional part of wedding invitation sets but are not required. They are an easy way to make your wedding invitation look more elegant and sophisticated without adding much cost.