Certified Mail Envelopes Flat Size 9x12 - Pack of 50


This pack includes 50 Flat Size 9X12 Certified Mail Envelopes.

Item No: CML9x12_50
Man Number: CML9x12_50

This pack includes 50 Flat Size 9” x 12” Certified Mail Envelopes.
Each envelope holds up to 70 sheets of paper, is bright white in color and includes the required USPS Certified Mail banner green printed on each side of the envelope. This envelope was designed to be used with Certified Mail Labels website to address, track and print USPS Certified Mail barcodes with PC Postage.  Our envelopes are made in the USA and have been approved by the United States Postal Service (USPS) to send USPS Certified Mail with Return Receipt Electronic Signatures, Restricted Delivery Certified Mail and Certified Mail with Priority Mail 2-3 day delivery.
50 Certified Mail Envelopes Flat Size 9" x 12" 
Certified Mail Envelopes 9x12 Flat Size

  • Holds up to 70 sheets of paper
  • USPS Certified Mail
  • USPS Certified Mail with Return Receipt Electronic (Signatures)
  • USPS Certified Mail with Restricted Delivery Service
  • USPS Certified Mail with Priority Mail 2-3 Day delivery

Not available in any store or Post Office

SHIPS USPS Priority Mail 2 or 3-day delivery
Address, track and print USPS Certified Mail and get proof of mailing and proof of delivery including Return Receipt Electronic Signatures. Send USPS Certified Mail, Restricted Delivery and Priority Certified Mail using this envelope.
Each order includes access to our free web-based software to address, track, print and mail USPS Certified Mail.  We keep a copy of your mailing history including the USPS proof of delivery receipts for 10 years.  No more lost green cards, forms or stickers.