800.959.8365

Mailing Guidelines

Mailing FAQ

Frequently Asked Questions about Modern Postcard's mailing services.

Modern's Postal Analytics

CASS Certification, Zipcodes and Barcodes.

Postage Types

Everything you've ever wanted to know about postage.

Postal Regulations

Requirements ensure proper automated handling of your postcards by the Post Office.

Return Addresses

It may seem like a small thing, but including your return address in your postcard layout is a smart idea.

Watch and Learn: Mailing Best Practices

Our Video on Mailing Services provides a ton of information. It’s worth a view.

Our Alumni ‘Save the Date’ Sumo postcards look fabulous, and Modern Postcard really helped us through the process. We will definitely use their services in the future.
Deanna C. Vejvoda
Annual Fund & Events Manager, The Morehead-Cain Foundation