Features


#9 Envelopes: The Return Envelope That Drives Faster Responses

#9 envelopes are the industry standard for reply mail. Sized to fit perfectly inside a #10 envelope, they’re a reliable choice for business correspondence, donation drives, billing cycles, and direct mail campaigns. Whether you're including a return envelope with an invoice or a promotional offer, #9 envelopes help streamline communication and encourage faster responses.


Built for Return Mail. Ready for Business.


Custom Sizes

Sized for Replies

Measures 3.875" x 8.875" and fits neatly inside a #10 envelope. Commonly used for reply envelopes, forms, and remittance.

Premium Paper Stock

Premium Uncoated Stock

Printed on 70 lb. white uncoated paper that’s smooth, writable, and ideal for mailing.

Flexible Quantity

Cost-Effective Bulk Printing

Order from 250 to 20,000 envelopes. Full-color printing ships in 4 to 6 business days. Window option available.

Custom #9 Envelopes for Return and Reply Campaigns




Support your business communications with reply envelopes that are branded, functional, and mailing-ready: 

  

Printing Options 

  • Full-color printing on 70 lb. uncoated white paper. 
  • Clean, non-bleed design area. Edge-to-edge printing not available. 

  

Reply-Ready Format 

Perfect for use as return envelopes in direct mail, payment remittance, or reply forms. Designed to pair with outgoing #10 envelopes. 

  

Optional Window Feature 

Choose a windowed envelope to display a pre-printed address on the reply insert. 





#9 Envelopes FAQs

Q: What is the standard use of a #9 envelope?
1,000,000+ business professionals trust us with their printing.
Designers. Small businesses. Iconic brands. We print for you.
Free file check.

Your files will be reviewed for printing errors without paying a cent.

More printing.

150+ print products to help you make a good impression. 1000+ options to customize to your heart’s content.

Reliable. Always.

The product you want. The way you want. Professional printing guaranteed.

Printing Cost: