Mailing rates by weight

Here are the current mailing rates for the United States Postal Service (USPS) based on weight:

Letters (1 oz or less)

• First-Class Mail: $0.55
• Priority Mail: $7.50 (flat rate)

Large Envelopes (1 oz to 13 oz)

• First-Class Mail: $0.92
• Priority Mail: $8.50 (flat rate)

Packages (1 oz to 70 lbs)

• Priority Mail: $7.50 (flat rate for packages up to 70 lbs)
• Priority Mail Express: $25.50 (flat rate for packages up to 70 lbs)

Regional Rate Boxes

• Regional Rate Box A (up to 15 lbs): $13.35
• Regional Rate Box B (up to 20 lbs): $16.35
• Regional Rate Box C (up to 20 lbs): $18.35

Media Mail

• Books, CDs, DVDs, and other media items: $3.19 (up to 70 lbs)

International Mail

• First-Class Package International Service: $1.20 (up to 1 oz), $2.20 (up to 2 oz), etc.
• Priority Mail International: $24.95 (flat rate for packages up to 70 lbs)

Note: These rates are subject to change, so it's always a good idea to check the USPS website for the most up-to-date rates.

Additionally, there may be additional fees for services such as:

• Insurance
• Signature confirmation
• Delivery confirmation
• Tracking
• Special handling (e.g. overnight delivery)

It's also worth noting that the USPS offers discounts for bulk mailings, as well as for businesses that use their services regularly. If you're a frequent sender, it may be worth exploring these options to save money on your mailing costs.