: Ensure your invitation weighs under 1 ounce and is rectangular . Square envelopes or those weighing over 1 oz require extra postage ($1.07 or more).
: If you prefer physical RSVPs, using a postcard instead of a card-and-envelope combo uses a Postcard Stamp Go to product viewer dialog for this item. ($0.61), which is roughly $0.17 cheaper than a standard Forever Stamp Go to product viewer dialog for this item. Avoiding Hidden Postage Fees cheapest way to buy stamps for wedding
“The vast majority of people won't scrutinize the envelope for details like the stamp... Just go with a love forever stamp and be done with it.” Reddit · r/weddingplanning · 3 years ago What to Know About Wedding Postage - Brides : Ensure your invitation weighs under 1 ounce
: Buying a roll of 100 is generally the most efficient bulk option, though sheets of 20 offer more decorative designs, like the Wedding Blooms Stamps Go to product viewer dialog for this item. ($21.40 for 20), for a slightly higher convenience cost. ($21.40 for 20)