Do pocket invitations require additional postage?
Only if you exceed the 1 ounce post office limit for a letter stamp. Pocket invitations can become heavy if you have a lot of inserts so ask your stationer to weigh them for you for an estimate of whether you will go over 1 ounce or not. Remember to always have your invitations weighed at the post office before you buy your postage and stamp your invitations. If you incorrectly stamp them they will either come back to you or be held at the recipient’s post office until they come and pay the unpaid postage.