USPS First Class Mail Service- Domestic, International, Tracking, Cost

USPS First Class Mail is one of the fast, affordable methods to send important mail items, packages envelopes, and lightweight packages. Send your important envelopes, postcards with first-class domestic mail service. Use First class mail international to send envelopes internationally to more than 180 countries. Grab the basic introduction, features, pricing, and restriction related information from below.

USPS First Class Mail Service

USPS takes about 1-3 business days to deliver first class mail items. This service is appropriate for business and personal correspondence, cards, brochures, and lightweight merchandise.


The most common question that comes to people mind is How much First Class Mail Service Costs?. Well, the price of First-Class Mail Forever Stamp is $0.49 and First-Class Mail Postcard Stamp price is $0.34. However, First-Class Mail prices are based on size, shape, and weight. Click Here to prepare Domestic Shipment on the basis of size and weight.

All the non-machineable envelopes such as square or vertical envelopes, lumpy envelopes, rigid envelopes, and mail with clasps, string, buttons will be charged a non-machineable surcharge even if they weigh less than 1 oz.

There will be an extra charge as well if a mailpiece exceeds the maximum length or height or thickness.

Use Price Wizard Calculator to calculate or measure your envelope and then calculate your domestic postage cost.


  • Best priced service for mail up to 13 oz,
  • This service delivers within 1 to 3 business days,
  • There is an insurance for loss or damage up to $5,000 for merchandise only,
  • This service can be combined with extra services to confirm delivery,
  • Get up to 3.5 ounces free with commercial priced letters and cards.


Maximum weight for First-Class Mail letters: 3.5 oz First-Class Mail envelopes and parcels, the maximum weight is 13 oz.

The weight of large First-Class Mail envelopes and parcels: 13 oz.

Make sure that all the envelopes or postcards must be rectangular. Otherwise, there will be an additional charge.

Visit Here to check all other shipping restrictions.

For Businesses

This service is suitable for businesses as it allows tracking with extra services, measurable, and easily targetable. There is a range of options available for businesses. Reach a greater percentage of your audience with first class mail service.

Use Business Price Calculator. Also note that commercial pricing is available for presorted letters, flats, and packages with a minimum quantity of 500 mailpieces. Automation discounts may also apply.

USPS First Class Mail International

First class mail International allows people to send international letters, postcards, and flats to more than 180 countries. Send Mail postcards and letters up to 1 oz anywhere in the world.

The price of this service begins at $1.15. However, there will be higher rate if a mailpiece exceeds the maximum length, height, or thickness. Large envelopes that exceed maximum dimensions will be charged package rates. Use International Price Calculator to calculate expected shipping costs for international shipments.


  • One of the most affordable international service,
  • Use this service for postcards, letters, and large envelopes
  • This service is eligible for flats up to 4 lbs and up to $400 in value
  • Global Forever stamp available
  • Delivery varies by destination.

If you’ve any query or question related to USPS First Class Mail Service, then please leave a comment below. We will reply back at the earliest. Keep visiting us for more informative content related to US Postal Services.

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