---
type: faq
title: "What size greeting cards require extra postage?"
description: "Postage surcharges come down to shape, size, and thickness, not just weight. A few common greeting card formats trigger extra USPS charges, so it pays to c"
resource: https://www.4over4.com/faqs/greeting-cards/what-size-greeting-cards-require-extra-postage
tags: ["Invitations & Cards", "faq"]
timestamp: 2026-07-20T18:54:40.856Z
---

# What size greeting cards require extra postage?

Postage surcharges come down to shape, size, and thickness, not just weight. A few common greeting card formats trigger extra USPS charges, so it pays to c

Part of the **Invitations & Cards** hub. See [all faq concepts](index.md).

- Page type: faq
- Hub: Invitations & Cards
- URL: https://www.4over4.com/faqs/greeting-cards/what-size-greeting-cards-require-extra-postage