How to Address a Clasp Envelope

Clasp envelopes come in different sizes and offer two forms of security. The flap has a gummy adhesive that adheres to the envelope once you wet it, and the metal clasp closes over the flap to hold it in place in case the adhesive fails. Yet, the way to seal a clasp envelope is not your only concern. You also need to know how to address it according to the United States Postal Service guidelines.

Things You'll Need

• Pen with waterproof ink

Instructions

1. Turn the clasp envelope so that the side opposite the clasp is facing you.

2. Hold it in a horizontal position. The longer sides of the clasp envelope should be at the bottom and top, while the shorter sides will be on the left and right. According to USPS regulations, clasp envelopes are non-machinable so it does not matter if the clasp is on the right or the left of the back side of the envelope. (Reference 2)

3. Print the return address in the upper left corner of the clasp envelope. This will assist the USPS in returning the envelope to you if it can't be delivered.

4. Print the delivery address on the center of the body of the envelope, parallel to the long sides.

5. Affix the correct postage to the upper right corner of the clasp envelope.

Tips & Warnings

• Always print the return and delivery addresses on the same side, according to the USPS.

• Place a piece of clear mailing tape over the clasp area of the envelope so that the contents will be more secure.

References

• United States Postal Service: Addressing Tips and Tools
• Riddle Office: USPS Postal Regulations Regarding Clasps and Closures