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USPS

USPS rates, regulations, and services for business mailers. Covers First-Class, Certified Mail, EDDM, and tracking options with 2026 pricing.

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Diagram showing certified mail cost as three stacked layers: postage, the Certified Mail fee charged on top of it, and optional Return Receipt proof.

CERTIFIED MAIL ·

Certified Mail Cost 2026: Fees & Return Receipt

Certified Mail cost in 2026: current USPS fees, Return Receipt options, and worked totals for a 1 oz letter.

Editorial illustration of a certified envelope moving through ordinary mail while USPS acceptance, delivery-attempt, and outcome records accumulate beside it.

CERTIFIED MAIL ·

How Does Certified Mail Work? The Life of a Letter

Certified Mail doesn't change how your letter travels — it builds a record around the trip. The whole system, stage by stage: what USPS writes down, who can sign, and what you can prove at each point.

Diagram of the four requirements for commercial First-Class Mail presort pricing: a minimum volume, a mailing permit with annual fee, presorting by ZIP code, and machinable pieces.

FIRST-CLASS MAIL ·

Commercial First-Class Mail Rates (Updated 2026)

How commercial First-Class Mail rates work, including volume requirements, presort discounts, and practical alternatives for small businesses.

Diagram showing that First-Class Mail has four prices rather than one — stamped letter, metered letter, postcard, and large envelope — with format determining the price before weight.

FIRST-CLASS MAIL ·

First-Class Mail Rates 2026: Stamp & Letter Prices

Current First-Class rates depend on format and weight. Start with the 1 oz letter rate, then use the tables below for heavier letters, postcards, and flats.

Diagram explaining First-Class Mail tracking: regular letters have no end-to-end tracking, Certified Mail adds proof of delivery, true packages go to Ground Advantage, and bulk mailing offers mail-stream visibility.

FIRST-CLASS MAIL ·

Can You Track First-Class Mail? Yes, Here's How

Can you track First-Class Mail? Learn which items include tracking, add-on services like Certified Mail, and how online mailing services provide delivery visibility.

Four USPS First-Class categories in ascending size: postcard, letter up to 3.5 ounces, flat up to 13 ounces, and package pricing for rigid or non-rectangular pieces.

FIRST-CLASS MAIL ·

First-Class Mail Size & Weight Limits

USPS First-Class Mail size and weight requirements for letters, postcards, and large envelopes. Includes dimensions, aspect ratios, and surcharge triggers.

Diagram showing the USPS First-Class Mail delivery window of one to five business days alongside four factors that affect it: drop-off time, weekends and holidays, address quality, and distance.

FIRST-CLASS MAIL ·

First-Class Mail Delivery Times Guide

USPS First-Class Mail delivery times by distance. Learn expected delivery windows for local, regional, and cross-country mail, plus factors that affect timing.

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