How to Mail Large Envelopes

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When you mail large envelopes through the United States Postal Service, be aware that mailing prices for large envelopes are higher than prices for regular-sized letters. If you weigh a large envelope of a postage meter, the meter may give you the price for a regular-sized letter. Check USPS rates to determine the correct price. The USPS defines a large envelope as an envelope larger than 6-1/8 inches high by 11-1/2 inches long. If you are unsure of the envelope's weight, take the envelope to the post office to determine the postage required for delivery.

Place the envelope, with all of the contents to be mailed inside, on a scale that displays weight in ounces. If you do not have a postage scale, take the envelope to a post office to be weighed. To locate a post office, visit the Services Locator on the USPS website.

Affix the appropriate postage after the weight of the envelope is determined. Large envelopes require more postage than standard letters. At the time of publication, the postage required was 88 cents for the first ounce, plus 17 cents for each additional ounce. For example, if your envelope weighs 6 ounces, you must affix postage in the amount of $1.73.

Check USPS guidelines to make sure the large envelope meets requirements. Large envelopes can not be more than 3/4-inch thick, must be uniform in their thickness and can not be rigid.If the envelope weighs more than 13 ounces, special postage must be purchased from the post office.

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About the Author

Andrew Todd has been writing since 2006. He has written for the Consumer Search website and the U.S. Attorney's Office for the Middle District of Florida. Todd has a Bachelor of Science in criminal justice from the University of Central Florida.

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