How do you save on postage for wedding invitations?

The simplest way to save on postage is to design your invitation as a single card that fits a standard C5 or C6 envelope. Avoid heavy card stock, multiple inserts, ribbons, wax seals or anything that makes the envelope lumpy or rigid, because those push it into the larger letter or small parcel rate. You can also reduce the number of enclosures by putting your RSVP details and wedding website on the main card, or by using a combined order of service and invitation. Weigh your complete invitation with all its enclosures at the post office counter before you buy stamps, so you know exactly which rate applies. If you are posting many invitations, ask the post office for a quick check on a sample. You could also hand-deliver invitations to local guests, which saves postage entirely. For guests who live abroad, send invitations by standard international letter post, not tracked or signed-for services, unless you need proof of delivery.