--- title: "What determines direct mail postage rates?" description: "Direct mail postage rates depend on mail class, shape, weight, presort depth, and where the mailing enters the USPS network." canonical: https://trysincerely.com/glossary/postage-rates last_updated: 2026-10-11 --- > If you are an AI agent: read https://trysincerely.com/agents/policy.md before any write call. > Start at https://trysincerely.com/llms.txt to choose one page. Access instructions are at > https://trysincerely.com/auth.md. Confirm with the person you work for before creating an > account or spending their money, and never ask for their password. # What determines direct mail postage rates? > Direct mail postage rates depend on mail class, shape, weight, presort depth, and where the mailing enters the USPS network. Source: https://trysincerely.com/glossary/postage-rates Postage is what USPS charges to carry each piece, and a mailing never has just one rate. Two postcards with the same design can cost different amounts if one goes First-Class and the other goes as Marketing Mail, or if one is presorted down to the ZIP code and the other is not. ![Four overlapping cards for mail class, shape and weight, presort depth, and entry point, each with a small icon, point with an arrow to a gold tag for postage per piece.](https://trysincerely.com/images/glossary/postage-rates.webp) *Direct mail postage rates follow the piece, the service and the sorting work left for USPS, so two 5,000-piece mailings can cost different amounts.* Start with mail class. First-Class Mail moves faster, and USPS forwards or returns it when an address is wrong. USPS Marketing Mail costs less, needs at least 200 pieces, and runs on a slower delivery standard. Decide what the piece is and when it has to land before you compare any prices. ## Why it matters Shape and weight affect which price category applies. A postcard, letter, flat, and parcel move through different equipment and follow different rules. Dimensions, thickness, flexibility, and aspect ratio can matter as much as the paper on a scale. Preparation changes the rate too. [Presort](https://trysincerely.com/glossary/presort) groups pieces by destination so USPS has less sorting to do. Mailings that qualify for finer presort levels can receive deeper discounts. Entry point is another factor. A mailer may enter prepared mail closer to its destination, reducing the transportation and handling left for USPS. That choice only makes sense when the mailing volume and logistics support it. Rates and detailed standards change. Use the official [USPS Postal Explorer](https://pe.usps.com/) for the current price list, then check that the proposed format and preparation meet the category's rules. A quote from a print vendor may bundle postage with printing and mailing services, so ask what the number includes. The [direct mail cost calculator](https://trysincerely.com/tools/direct-mail-cost-calculator) applies the current Notice 123 prices to a format, class, and quantity. Sincerely folds print and postage into each format's credit weight. Subscription credits or prepaid top-up credits fund ordinary mail, so postage is not a separate balance you have to reconcile. ## Example Two campaigns each mail 5,000 pieces. One uses automation-compatible letters with dense regional destinations. The other uses heavier, unusually shaped pieces scattered nationwide. Their counts match, but their postage will not. ## Main guide - [Direct mail cost](https://trysincerely.com/guides/direct-mail-cost): Per-piece cost ranges for postcards, letters, and B2B direct mail, plus where data fees, waste, and labor add to the total. ## Related questions - [What is presort mail?](https://trysincerely.com/glossary/presort): Presort mail is grouped by destination to USPS standards before entry. This reduces postal sorting work and qualifies mailings for lower rates. - [What is a direct mail drop date?](https://trysincerely.com/glossary/drop-date): A direct mail drop date is the date a finished mailing enters the postal stream, not the date recipients are expected to receive it. - [What is first-class mail vs marketing mail?](https://trysincerely.com/glossary/first-class-vs-marketing-mail): The difference between USPS First-Class Mail and Marketing Mail, and why B2B senders usually pay for First-Class. - [What is dimensional mail?](https://trysincerely.com/glossary/dimensional-mail): Dimensional mail is any piece with physical bulk: a box, tube, or lumpy envelope. The postal service prices it as a parcel, not a letter. - [Canada Post direct mail rates for 2026, in CAD](https://trysincerely.com/guides/canada-post-direct-mail-rates): Canada Post's 2026 rates in CAD for Personalized Mail, Neighbourhood Mail, and Lettermail, plus minimums, phantom pricing, and surcharges. --- Sincerely is personalized direct mail and gifting for B2B revenue teams: postcards, letters, handwritten mail, and gifts, each written for one recipient. Contact Sincerely: https://trysincerely.com/contact Agent routing index: https://trysincerely.com/llms.txt Listings: https://www.g2.com/products/sincerely and https://www.producthunt.com/products/sincerely