Choose USPS mail services for business by what you are sending and when it needs to arrive. First-Class Mail suits eligible letters and flats. USPS Ground Advantage is a starting point for routine domestic packages. Compare Priority Mail when speed matters and Priority Mail Express when you need a scheduled delivery commitment with a money-back guarantee, subject to its terms.
For advertising campaigns, consider USPS Marketing Mail or Every Door Direct Mail. For qualifying books and educational materials, check Media Mail eligibility.
Your business may need several services. An invoice, a customer order, and a neighborhood promotion each serve a different purpose. Use a mailing policy that assigns the right service to each job instead of paying for the same option every time.
Service details and displayed retail starting prices checked October 21, 2026. The delivery windows below concern domestic services. Check the actual origin, destination, mailing date, acceptance cutoff, and contents before buying postage.
Which USPS service fits your business mail
Start with the contents and mailpiece format. Then compare delivery expectations and the mailing or delivery evidence you need.
| Service | Business use | Published domestic delivery window | What to check |
|---|---|---|---|
| First-Class Mail | Invoices, statements, correspondence, and eligible postcards or flats | 1–5 days | Letter and flat dimensions, flexibility, weight, and any required extra service. |
| USPS Ground Advantage | Routine merchandise and other eligible packages | Expected in 2–5 days | Deadline, package dimensions, destination, and content restrictions. |
| Priority Mail | Packages and documents where its quoted delivery estimate fits the job | Generally 2–3 days | The estimate is not a money-back delivery guarantee; compare weight-and-zone pricing with Flat Rate. |
| Priority Mail Express | Urgent documents or packages that need a scheduled delivery commitment | 1–3 days with a money-back guarantee, subject to exceptions | The commitment for the specific shipment, acceptance time, and refund conditions. |
| USPS Marketing Mail | Eligible advertising, catalogs, newsletters, and other bulk mail | Plan campaign timing with USPS; no date-certain guarantee | Content eligibility, minimum volume, preparation, and entry requirements. |
| Media Mail | Qualifying books, recorded media, and educational materials | Expected in 2–8 days | Contents qualify under Media Mail rules and may be inspected. |
USPS’s mail and shipping comparison provides current service information. These windows are not promises for every destination. For example, Ground Advantage shipments to Alaska, Hawaii, offshore destinations, or containing hazardous materials may take longer.
First Class Mail for letters and flats
Use First-Class Mail for business correspondence that meets the applicable shape and weight rules. Letters can weigh up to 3.5 ounces, and large envelopes or flats can weigh up to 13 ounces. The way the piece bends, its dimensions, and its weight matter.
Standard First-Class Mail letters do not include USPS Tracking. If you need evidence of mailing or delivery, choose an eligible extra service rather than assuming a stamp provides it.
Businesses preparing eligible presorted First-Class Mail can access commercial pricing with a minimum of 500 pieces. Compare the postage benefit with the cost of address preparation and sorting.
Ground Advantage for routine packages
Compare USPS Ground Advantage first when a customer order can travel within its expected delivery window. It accepts eligible packages up to 70 pounds and includes tracking and $100 of insurance, subject to coverage rules.
Use the weight and dimensions of the packed shipment. A small product in a large box can cost more than expected because package size affects pricing.
Priority Mail for a shipment that benefits from its delivery estimate
Priority Mail includes tracking and up to $100 of insurance with most shipments, subject to restrictions. It accepts eligible shipments up to 70 pounds and offers weight-and-zone pricing and Flat Rate packaging options.
Compare both methods. Flat Rate suits dense items that fit the designated container, but it isn’t automatically the lowest price. The flaps must close within the normal folds.
Use the expected delivery date for your ZIP Code pair when deciding. Standard Priority Mail does not come with a money-back delivery guarantee.
Priority Mail Express for a scheduled commitment
Priority Mail Express provides 1–3 day service by 6 p.m. with a money-back guarantee, subject to exceptions. The scheduled delivery date depends on the route and drop-off time.
Check the actual commitment before promising a customer overnight delivery. Confirm the refund terms and any additional service you need, such as a requested signature record. A service name alone does not establish next-day availability for every shipment.
Choose a separate service for marketing campaigns
Advertising mail has different goals from customer correspondence. A campaign may prioritize reaching a route or an address list at a lower per-piece cost, with more time allowed for preparation and delivery.
USPS Marketing Mail for eligible bulk campaigns
USPS Marketing Mail requirements include a minimum mailing of 200 pieces or 50 pounds. Each piece must weigh less than 16 ounces. USPS does not sell this class at a single-piece rate.
Check whether the contents qualify before choosing the class. Mailing preparation, addressing, sorting, and entry requirements affect the work and cost. Do not select a bulk advertising rate for transactional mail without reviewing the applicable content rules.
Plan printing, preparation, and postal transit. If an offer expires on a specific date, allow enough lead time and confirm the campaign schedule with USPS or your mail preparation provider.
Every Door Direct Mail for a route-based campaign
Every Door Direct Mail, or EDDM, helps businesses target selected postal routes without building a list of individual recipient names and addresses.
EDDM Retail requires at least 200 pieces and allows up to 5,000 pieces per day per ZIP Code. It does not require a special mailing permit. Mailpiece size, weight, preparation, and route requirements still apply.
For example, a restaurant announcing a nearby opening could compare EDDM with an addressed campaign. A company contacting specific existing customers may need an address-list approach instead.
EDDM helps you prepare and target eligible USPS Marketing Mail. It is not an express package delivery service.
Compare postage using the same shipment details
A starting price helps you identify an option, but it does not price your shipment. USPS displayed the following retail starting figures when checked on October 21, 2026.
| Service or mailpiece | Displayed retail starting price |
|---|---|
| First-Class Mail one-ounce letter | $0.82 |
| USPS Ground Advantage | $8.40 |
| Priority Mail | $11.50 |
| Priority Mail Express | $37.05 |
| Media Mail | $4.39 |
These are different products and qualifying mailpieces. They are not quotes for one identical shipment, Flat Rate box prices, or commercial account rates.
USPS implemented holiday package price adjustments on October 4, 2026, scheduled to remain in place until January 17, 2027. Use the rate for the mailing date rather than copying a price from an older comparison.
Check commercial pricing and package dimensions
USPS offers Commercial Rates through Click-N-Ship for Ground Advantage, Priority Mail, and Priority Mail Express. Eligible businesses can also review the Business Rate Card. Compare the rate you can actually purchase with the retail alternative.
Include packaging and any applicable dimensional-weight or nonstandard fees. Large, lightweight boxes, long packages, unusual shapes, or restricted contents can change the quote. Check USPS mailing rules before treating batteries, perfume, liquids, or other regulated items as ordinary merchandise.
Run a comparison you can repeat
Choose a representative order and keep every input consistent. For example, use a two-pound packed box measuring 8 × 6 × 4 inches, from ZIP Code 90210 to ZIP Code 10001, with the actual mailing date and contents.
Compare Ground Advantage, Priority Mail in your own packaging, and any Flat Rate container that fits. Record the quoted postage, packaging expense, required extras, and expected or committed delivery date. This example supplies test inputs rather than an invented rate quote.
If your quotes show a $1.50 saving on 400 eligible orders, the postage difference would be $600. That is hypothetical arithmetic, not a claim about average USPS savings. Keep a faster option for orders that need it.
Include returns and delivery evidence in your mailing policy
Decide what happens when a customer returns an item or a shipment cannot be delivered. Ground Advantage includes a return-service option for businesses, but you’ll need to set up and review pricing for the outbound label and customer return arrangement.
For documents, decide whether you need an acceptance record, delivery information, or a signature. Tracking, Certified Mail, insurance, and a delivery-speed guarantee each serve a different purpose. Purchase the service that supplies the evidence your task requires.
Included insurance also has conditions. Keep proof of value and mailing, review exclusions, and follow the claim requirements if an eligible shipment is lost or damaged. An included coverage limit is not an automatic payment of that amount.
Set a mailing policy your team can follow
Use these steps to make the comparison repeatable.
- Identify the contents and format. Separate letters and flats from merchandise, advertising, and qualifying media.
- Check eligibility. Confirm dimensions, packed weight, packaging, destination, and any restricted-content rules.
- Set the delivery need. Distinguish a flexible arrival window from a job that requires a scheduled commitment.
- Choose evidence and coverage. Decide whether the item needs tracking, proof of mailing, a signature, or insurance beyond any included coverage.
- Compare the full cost. Use the actual mailing date, the same shipment inputs, and the pricing available to your business.
- Retain the records. Keep the label, acceptance evidence, quote or receipt, tracking information, and any customer return instructions.
Review the policy when rates or service standards change. Check results on your own routes instead of extending one good shipment into a nationwide delivery promise.
Where PostScan Mail fits into business mail handling
USPS transports mail and packages. PostScan Mail provides a virtual mailbox workflow for correspondence and supported packages received at your selected address.
You can review incoming items online and request actions such as content scanning, forwarding, storage, shredding, or recycling. Options, allowances, and charges depend on the service and location you select. See how PostScan Mail works before choosing a plan.
When you need an original document or received package sent onward, review the mail forwarding service. The PostScan Mail shipping calculator estimates the cost to reship or forward from a PostScan Mail location. Keep that cost separate from the original sender’s postage and your mailbox subscription.
For a remote business owner, this can support a workflow where you review routine correspondence online and forward selected originals when needed. It does not change the USPS delivery standard for the original mailing.
Match the USPS service to the job
Use First-Class Mail for qualifying correspondence, compare Ground Advantage and Priority Mail for packages, and check Priority Mail Express when a shipment needs its scheduled commitment. Select marketing and media services based on eligibility and cost.
If you also need to receive and manage business mail remotely, compare PostScan Mail locations and mailbox plans. Choose the address and handling allowances that fit the mail your business actually receives.
