USPS has express and standard mail services to fit your needs. Depending on what items you're sending (and when you want them delivered), choose based on: Fastest delivery speed, Most affordable price, Shipping online vs. at a Post Office location.

USPS has express and standard mail services to fit your needs. Depending on what items you're sending (and when you want them delivered), choose based on: Fastest delivery speed, Most affordable price, Shipping online vs. at a Post Office location. Compare Mail Services: Compare USPS mail services by starting retail prices, delivery speed, and more. Most services automatically include USPS Tracking (except First-Class Mail service), and you can add insurance and extra services. Save on Shipping: If you're using Priority Mail Express, Priority Mail, or USPS Ground Advantage service, you can ship online with Click-N-Ship and get lower Commercial Rates. Businesses can get additional savings by opting in to the Business Rate Card. Fastest Delivery Speed Services: Priority Mail Express: For urgent items that must arrive in 1-3 days with date-certain delivery and money-back guarantee. Flat Rate Envelope from $35.90, USPS Shipping Box or Your Own Box by Weight/Zone from $35.65. Maximum weight 70 lbs. Tracking included with up to $100 insurance included; additional insurance coverage available up to $5,000. Priority Mail: For important items needing arrival in 2-3 days. Flat Rate Envelope from $12.90, USPS Shipping Box (Flat Rate) from $13.65, Your Own Box by Weight/Zone from $11.00. Maximum weight 70 lbs. Tracking included with up to $100 insurance; additional insurance coverage available up to $5,000. Simple, Affordable, Reliable Services: USPS Ground Advantage: Low rates for packages with expected delivery in 2-5 days, also primary option for HAZMAT items. From $7.90, 2-5 days delivery, 70 lbs maximum. Tracking included with up to $100 insurance; additional insurance coverage available up to $5,000. Postcards & Envelopes: First-Class Mail: For letter envelopes (under 3.5 oz) or large envelopes (under 13 oz) that are flat and bend easily. Postcards from $0.61, letters from $0.78, large envelopes from $1.63. Delivery in 1-5 days. No tracking for letters unless you buy add-on services. Media Mail: Cost-effective way to send books, media, and educational materials in 2-8 days. From $4.47. Maximum 70 lbs. Eligible items include books (at least 8 pages), 16mm or narrower films, printed music, video and sound recordings, playscripts, manuscripts, educational charts, and medical materials. Video games, computer drives, and digital drives do not qualify. Additional Package Fees: Dimensional Weight: Applies to large, lightweight packages. If package is larger than 1 cubic foot (1,728 cubic inches), multiply Length x Width x Height and divide by 166 to get DIM weight. If DIM weight exceeds actual weight, pay DIM weight price. Dimension-noncompliance fee of $3.00 applies if dimensions omitted or inaccurate. Nonstandard Fee: Extra fees for packages harder to process based on length, volume, or characteristics. Nonstandard Length (22-30 inches): USPS Ground Advantage, Priority Mail Express or Priority Mail add $4.50. More than 30 inches: USPS Ground Advantage adds $10.00; Priority Mail Express or Priority Mail adds $21.00. Nonstandard Characteristics add $4.50 for cylindrical tubes, cans, metal/wooden boxes, or liquid containers. Nonstandard Volume (more than 2 cubic feet/3,456 cubic inches): USPS Ground Advantage adds $21.00; Priority Mail Express or Priority Mail adds $35.00. Live Animal & Perishable Handling Fee: USPS Ground Advantage adds $7.50; Priority Mail adds $15.00; Priority Mail Express adds $7.50.