Sheets and booklets of unused forever stamps next to envelopes on a navy desk

Genuine unused USPS postage

Genuine USPS Forever Stamps, Ready to Mail

Sheets, books and rolls of unused USPS postage, sourced from closed businesses and inspected before we list them. Orders ship within 24 hours and every stamp is guaranteed authentic.

Shop Forever StampsBulk & Discount Deals
  • Unused, never canceled
  • Ships within 24 hours
  • Sheets, books & rolls

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About Us

Welcome to Mailbox of Flushing - Your Gateway to Affordable and Eco-friendly Mailing!

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  • An adult sits at a desk beside an empty envelope and an unused postage stamp.

    How Much Does It Cost to Mail a Letter to Canada?

    If you’re wondering how much to mail a letter to Canada, a one-ounce letter or postcard sent from the United States costs $1.75 as of October 2026. One Global Forever...

    How Much Does It Cost to Mail a Letter to Canada?

    If you’re wondering how much to mail a letter to Canada, a one-ounce letter or postcard sent from the United States costs $1.75 as of October 2026. One Global Forever...

  • An adult places a wedding invitation into a stamped envelope at a kitchen table.

    Wedding Invitation Postage Costs and Mailing Re...

    For wedding invitation postage, weigh one fully assembled invitation: a machinable domestic letter up to 1 oz needs one Forever stamp, over 1 oz through 2 oz needs one two-ounce...

    Wedding Invitation Postage Costs and Mailing Re...

    For wedding invitation postage, weigh one fully assembled invitation: a machinable domestic letter up to 1 oz needs one Forever stamp, over 1 oz through 2 oz needs one two-ounce...

  • Two unused Forever stamps beside an empty open envelope on a wooden desk.

    Can You Reuse Postage Stamps?

    Can you reuse postage stamps? No, a stamp that has already paid for a mailing can't pay for a different mailpiece, even without a postmark. A returned item marked for...

    Can You Reuse Postage Stamps?

    Can you reuse postage stamps? No, a stamp that has already paid for a mailing can't pay for a different mailpiece, even without a postmark. A returned item marked for...

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