Can a first class package be an envelope?
What is First Class Mail.
You can send standard postcards, letters and large envelopes and small packages up to 15.99 ounces using First Class Mail.
If your First Class package is over 15.99 ounces, you must upgrade the mail class to Priority Mail..
How thick is a first class package?
First-Class Mail Letters Size Requirements: Minimum Size: 3½ inches by 5 inches. Maximum Size: 6⅛ inches by 11½ inches. Thickness: 0.009 inch to ¼ inch.
What is considered package thick envelope?
USPS Size/Weight Requirements Thick Envelopes: Includes bubble-mailers and other large, padded envelopes and mailers and has the same size restrictions as a flat. Since a Thick Envelope is under 1 cubic foot, the Stamps.com software does not add any USPS surcharges or ask for package dimensions.
What does USPS First Class package mean?
USPS First Class Package Service is a fast, cost-effective way to ship lightweight packages weighing up to 15.99 ounces to any U.S. destination. … Deliveries can be shipped to any U.S. address, PO Box, and many APO/FPO/DPO destinations.
What kind of envelope can I use for first class mail?
Postcards, letters, large envelopes, and small packages can be sent using First-Class Mail. This service is typically used for personal and business correspondence and bills.