---
type: faq
title: "Does EDDM postcard size affect postage cost?"
description: "Yes, size directly affects EDDM postage because it determines whether your piece is classified as a letter or a flat. Letters get the lowest EDDM retail ra"
resource: https://www.4over4.com/faqs/postcards/does-eddm-postcard-size-affect-postage-cost
tags: ["Marketing Materials", "faq"]
timestamp: 2026-07-20T18:54:40.856Z
---

# Does EDDM postcard size affect postage cost?

Yes, size directly affects EDDM postage because it determines whether your piece is classified as a letter or a flat. Letters get the lowest EDDM retail ra

Part of the **Marketing Materials** hub. See [all faq concepts](index.md).

- Page type: faq
- Hub: Marketing Materials
- URL: https://www.4over4.com/faqs/postcards/does-eddm-postcard-size-affect-postage-cost