We strongly recommend taking a fully assembled invitation to the US Post Office that you intend to mail your invitations from. Ask them to weigh the invitation so that you know exactly how much postage you need to mail your invites.We also strongly recommend paying the additional surcharge to have your invitations hand-processed and hand-canceled in order to avoid damage from sorting machines.Please Note: Lily & Roe Co., LLC. is not responsible for postage or issues, concerns, mishandling, or damage arising from mailing with USPS.