#9 Envelope Printing

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Number 9 Envelopes


  • 3.875” x 8.875” finished size
  • Choose from commercial or square flap
  • Full-color (front) on 70lb uncoated paper
  • Inkjet and laser print friendly
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On Time Delivery Service

On-time delivery date is 100% guaranteed if
press-ready files are received by cut-off time.

Customize Your #9 Return Envelopes for a Better Response

Return envelopes may be a business necessity, but that doesn’t mean they can’t look great, too! Order custom #9 envelopes and print your brand identity in full color. You can use color printing on the front or back of the envelope for twice the impact. Reply envelopes are made of 70lb uncoated opaque paper and will work with either inkjet or laser printers.

#9 return envelopes measure 3.875” x 8.875” and can accommodate a tri-folded standard 8 ½" x 11" letter. They will also fit inside a standard #10 envelope so they can be used for fundraising appeals and other non-profit mailings. The envelopes include a gum seal on the flap.


  • Envelopes are 3.875” x 8.875”
  • Printed on 70lb uncoated paper
  • #9 envelopes fit inside regular #10 envelopes
  • Compatible with inkjet and laser printers
  • Choose from 2 envelope styles: Square Flap with Side Seams and Commercial

Envelope Styles

Square Flap with Side Seams

Square Flap with Side Seams Envelope style


No. 10 Envelope - standard business envelope

More printing space

Great for envelope designs that have text or images on the flaps

Standard business envelope, most popular

Can be used on automated inserting machines

Marketing Tips

If you are in a field that frequently sends out mail requiring a response, you probably already know that there’s no such thing as having too many #9 envelopes around. No matter how many you print, and how carefully you manage your inventory, more always seem to be needed! Return envelopes are very versatile, and can be used for many purposes, including:

  • Business correspondence
  • Direct mail packages
  • Fundraising letters
  • Membership drives
  • Subscription campaigns
  • Marketing surveys
  • Warranties and forms

Printed reply envelopes can be customized in a variety of ways. If you already have letterhead and branded #10 envelopes, extending your brand identity on a #9 envelope will give you a complete suite of stationery. Reply envelopes will hold a standard size letter folded in thirds, making it useful for everyday correspondence.

If you plan on using printed #9 envelopes exclusively as a response tool, you may want to design the envelope in a way that makes it distinct from your other branded envelopes. That way, it will be clear to customers which envelope they need to return. This is especially important if you often send out return envelopes inside a #10 envelope. You don’t want to confuse your customers.

You can add design elements and instructions on the outside of your reply envelopes to encourage customers to respond. Whether your instructions are “Mail in this envelope to qualify,” or “Please enclose and send your donation before our fund drive closes,” the additional messaging can bring in a better response.


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