USPS approved Certified Mail Envelope include 'ERR' - Electronic Return Receipt.  Send Certified Mail using our USPS approved bright white envelope with the distinguished USPS Certified Mail automation, in-route tracking and Electronic Return Receipt to show delivery confirmation. 

Free web access to print, address and track your USPS Certified Mail Letters. No special labels are needed. Our web software will address, track, print article numbers, bar codes, and the legal proof of mailing manifest PS-3877 including the Green Electronic Return Receipt to show Delivery Confirmation.  

Each Certified Mail Envelope includes ERR - Electronic Return Receipt. If you use the USPS Green Card for proof of delivery, you will save the $2.20 Green Card postage. Our ERR Electronic Return Receipt is proof of delivery information authored by USPS when each Certified Mail Letter is delivered. Our USPS delivery and trackling information also includes 'in-route' Confirm letter tracking electronically stored in your free online account for up to 7 years. 

USPS Approved Certified Mail Envelopes
 • No software to load or purchase - Web based access 24/7 365 days a year
 • No monthly fees or charges
 • Unlimited users can access or login at the same time
 • Import mail list from Excel or CSV file for fast Automated list mailings
 • Creates USPS Certified Mail Tracking Article Numbers and Bar Codes
 • Electronic Tracking & Delivery Information
 • USPS Address List Standardization CASS improves the accuracy of delivery
 • Prints USPS Mail Manifest (PS-Form 3877)
 • Prints Electronic Return Receipt ERR (USPS Proof of Letter Delivery)
 • Includes Certified Mail Postage Rate Calculator
 • In route Certified Mail letter tracking 
 • 7 Year Archive of Electronic Delivery Information
 • Export data to your PC or system integration 

Same Day Shipping Deadline: 2 PM Eastern 
Monday - Friday (Excludes Holidays). After 2 PM orders are shipped the next business morning. We gladly accept Visa, MasterCard, American Express and Pay Pal. We ship anywhere in the Continental United States and reserve the right to choose the delivery company of our choice. We ship orders using USPS, UPS and FedEx to meet your delivery requests.

ERR - Electronic Return Receipt is proof of letter delivery authored by the United States Postal Service (USPS). This service includes USPS Confirm 'in-route' tracking scans and a 7 year storage archive of your mail history.