How many papers can be mailed with one stamp

In the United States, the United States Postal Service (USPS) allows you to mail a certain number of papers with one Forever Stamp, which costs $0.55 as of 2022.

Here are the guidelines:

• Letters (1 oz or less): 1 letter can be mailed with one Forever Stamp.
• Large Envelopes (1 oz or less): 1 large envelope can be mailed with one Forever Stamp.
• Postcards: 1 postcard can be mailed with one Forever Stamp.

However, if you need to mail heavier or larger items, you'll need to use additional postage. Here are some examples:

• Letters (over 1 oz): Each additional ounce costs $0.15.
• Large Envelopes (over 1 oz): Each additional ounce costs $0.15.
• Flat Rate Envelopes: These envelopes have a fixed rate, regardless of weight, and cost $7.50 for a 1-pound envelope.
• Priority Mail: This service has a flat rate for packages up to 70 lbs, with prices starting at $7.50 for a small box.

Keep in mind that these rates are subject to change, so it's always a good idea to check the USPS website or consult with a postal worker for the most up-to-date information.