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Free direct mail resources

The math, the checklists, and the reference sheets we hand to customers when they ask. No gates beyond an email, and we’ll never email you anything you didn’t ask for.

USPS

USPS Postage Rate Sheet 2026

Pre-sort, Drop-ship, and Co-mingle math at every tier. The exact 2026 numbers we run against on customer manifests — Marketing Mail and First-Class.

Buyer

Direct Mail Platform Buyer's Checklist

Fourteen questions to ask any vendor before you sign. Postal-stack scope, pricing transparency, integration depth, attribution, and the soft-cost questions most RFPs miss.

Data

NCOA / CASS / DPV Cheat Sheet

What runs in what order, what gets dropped, and what passes through. One page. Pin it next to your data team and cut your mailing-list errors in half.

Want to see how DirectMail.io would run your list?

Bring a real campaign and a real list. We’ll show you postal-class math, pre-sort tiers, and attribution end-to-end — on your numbers.

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