6" x 9" Certified Mail Window Envelopes for Electronic Return Receipt SDC-3520

Take your Stamps.com account to the next level. Stop worrying about applying forms and labels to your Certified Mail. Print all the required information and barcodes on one simple sheet of paper, and then slip it into our 6" x 9" Certified Mail Envelope! Certified Mail done the easy way!

• Use provided 6" x 9" Certified Mail Window Envelopes
• Certified Mail tracking number is recorded by Stamps.com so you can view all tracking events including delivery