What is First Class Package Service?

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USPS First-Class Package Service offers the best rates for shipments weighing equal or less than 15.9 oz.

If your shipment is less than a pound and is being shipped in a custom box or envelope, First-Class Mail is the most affordable option for you. In most cases, delivery will be within three days.

First Class - Domestic

Best Option When: You are shipping lightweight packages.
Delivery Timeline: Domestic delivery averages 1-5 business days.
This is not a guaranteed service; delivery may be delayed.
Service Overview: Domestic rates are determined by package weight.
Delivery confirmation (tracking) is included for free on all domestic shipments, excluding the Large Envelope/Flat. Learn more
Signature confirmation available for added fee.
Domestic Shipment insurance available for an added fee.
View the domestic rate table
Maximum dimensions for domestic shipments: 22" x 18" x 15" (LxWxH)
Maximum weight for domestic shipments: up to 15.9 oz.
There are restrictions for mailing restricted, prohibited, and hazardous materials, including cigarettes and smokeless tobacco.  Learn more about restrictions.

First Class - International

Best Option When: You are shipping lightweight packages.
Delivery Timeline: International delivery times vary by destination. First Class Mail is not recommended if a timely delivery is important.
Service Overview: No additional confirmation options available on international shipments.
Rates: View the international rate tables:

Maximum dimensions for international shipments: 24" Length, L+H+W= 36"

Maximum weight for international shipments: up to 4 lbs.
Some countries may have lower weight restrictions.  View Country-Specific Restrictions

If you have problems that require extra assistance, feel free to reach out to our team.

Anyone can post questions in the comments, to the left, and the ShippingEasy Customer Success team will gladly assist.

ShippingEasy accounts on a paid plan will find additional resources in the upper left corner in app.

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Fully registered accounts may email, call, or chat with our team.
Trial accounts may email or call.


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