Nadia Petrov Customer Education Lead at 4OVER4.COM
Nadia is our customer education voice, built from the knowledge of our production team, with over 20 years in printing.
Question
Can I mail handmade envelopes through USPS?
Answer
Yes. USPS accepts handmade envelopes as long as they meet the same size, shape, and legibility rules as any other mail piece.
- Minimum size: 3.5" x 5".
- Maximum size for standard letter rate: 6.125" x 11.5".
- Shape: must be rectangular. Square or irregular envelopes may need extra postage.
- Address area: the recipient address has to be clearly legible with room for a barcode.
- Thickness: stay under 1/4 inch to keep the letter rate.
Envelopes that fall outside these limits still mail, they just cost more. Design inside the window and you keep the lowest postage. For a mailing where every envelope has to meet spec, factory-printed envelopes guarantee consistent dimensions.
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