---
type: guide
title: "How 3D Postcards Work and Why They Grab Attention"
description: "How 3D postcards create depth and motion, whether you can mail them, and what sizes exist. Order attention-grabbing 3D postcards at 4OVER4."
resource: https://www.4over4.com/guide/how-do-3d-postcards-work
tags: ["guide"]
timestamp: 2026-08-08T21:25:50.722Z
---

# How 3D Postcards Work and Why They Grab Attention

How 3D postcards create depth and motion, whether you can mail them, and what sizes exist. Order attention-grabbing 3D postcards at 4OVER4.

See [all guide concepts](index.md).

- Page type: guide
- URL: https://www.4over4.com/guide/how-do-3d-postcards-work