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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.

Everyone I spoke to at Modern Postcard was friendly and had all the information I needed. Then the postcard arrived and it was perfect!
Lisa Desimini
Author and Illustrator