How much is the cost to mail 5x7 11oz envelope?

As of October 2023, the cost to mail a 5x7 inch envelope weighing 11 ounces within the United States using First-Class Mail would typically be around $4.00 to $5.00, depending on the exact service and any additional features like tracking or insurance. For International Shipping, the cost would be higher and vary based on the destination. It’s always best to check the current rates on the USPS website or visit your local post office for the most accurate pricing.