How much does it cost to mail a brown envelope

The cost to mail a brown envelope (also known as a standard letter-sized envelope) in the United States depends on the weight, size, and destination of the envelope. Here are the current rates for First-Class Mail letters and flats:

Domestic Mail (within the United States)

International Mail

Additional Fees

Note: These rates are subject to change, so it's always a good idea to check the official USPS website or consult with a postal worker for the most up-to-date information.

Keep in mind that these rates apply to standard letter-sized envelopes (up to 6.125 inches long, 11.5 inches high, and 1/4 inch thick). If your envelope is larger or heavier, you may need to use a different type of mail service or pay additional fees.