You can easily set-up Green Shipping to automatically offset all your Click-N-Ship United States Postal Service shipments. Here's how:

1. First step is to make sure to Login In to your Green Shipping account.
2. Identify your Green Shipping email Tracking ID. In order to view your Tracking ID, you'll need to navigate to the Email Tracking section of the Shipment Preferences page. This will be in the form: "track-gsuserid####@greenshipping.com" where: gsuserid is equal to your Green Shipping UserId and #### is a 4-digit security token.
3. Under the Email Tracking section you'll need to allow for submission of tracking numbers via email. The "Accept Tracking Numbers via Email" radio button should be selected to "Yes".
4. Green Shipping maintain a list of carrier email accounts which are used to transmit tracking numbers. In order to allow carrier information to be automatically added to your account, the "Accept Email from Major Shippers" radio button should be selected to "Yes". Should you need to add any additional authorized email senders, these can also be manually added.
5. USPS does not offer any package weight information available electronically. Package weight is a critical piece of data to provide any determination of CO2 emissions. Green Shipping provides 2 methods to determine an average package weight used for all USPS shipments.
1. Method 1 allows you to set the average package weight by using specific knowledge of the typically weight of your USPS shipments.
2. Method 2 uses the average package calculate for all you UPS and FedEx shipments and uses this as the package weight for all USPS shipments.
3. Click here to set the method for determining you USPS shipment weight
6. As you ship your USPS shipments, you'll need to provide ensure that your Email Tracking ID is entered on all shipments. To start, sign in to your USPS Account .
7. Start a Click-N-Ship shipment. When entering the Label Information, add the Tracking ID in the "Email" field of the Return Address section. Make sure to check the "Get Track and Confirm notifications via email". By completing this information, your USPS shipments will automatically be added to your Green Shipping account once the delivery is complete.
   
8. You can use the USPS Shipment Notification Acceptance (SCAN) Form to have the shipment added to your Green Shipping account at time of shipment versus at the time of delivery. Once all labels for the day have been entered, the next step is to print and pay for the labels. On the Shipping Cart page, the checkbox "Add to MM/DD SCAN Form" should be marked. This will ensure that all labels currently being purchased will be added to the SCAN Form for the day.
   
9. The SCAN Form is an end of day report which is provided to the mail carrier or post office, scanned upon receipt, and then generates the shipment notification message. After printing all your labels for the day, you'll prompted to review the SCAN Form Details. Select the "Closeout and Print" button in the lower right and the SCAN Form (see sample) will be generated.
   
10. Deliver the SCAN form along with your shipments for the day to the mail carrier. The SCAN Form contains a master barcode that s scanned when your shipment is received by the Postal Service. This single scan enters all of your associated packages as a "Shipment Accepted" with the USPS and allows both sender and the recipient to see when the package entered the mailstream.