Certified Mail Envelopes Flat Size 9x12 - Pack of 450 Envelopes for Certified Mail Labels

 

Each envelope holds up to 63 pages of paper, is bright white in color and includes the required USPS Certified Mail banner printed on each envelope. This envelope was designed to be used with Certified Mail Labels website to address, track and print USPS Certified Mail bar codes 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. 

 

 

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.