USPS shows you how to send a letter or postcard in the U.S., from choosing an envelope, writing the address, buying and applying stamps, and finding a drop-off location.

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The meaning of ENVELOPE is a flat usually paper container (as for a letter). How to use envelope in a sentence. How do you pronounce envelope?: Usage Guide.

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Add a delivery and return address to a single envelope, set printer options, adjust for envelope size, and save or print.

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