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USPS BlueEarth®USPS BlueEarth logo Carbon Accounting for commercial mailing customers

The USPS BlueEarth Product Carbon Accounting Service was introduced in 2012 to allow business customers to measure and manage carbon impacts across their supply chains. This proprietary service follows the most widely accepted accounting methods to calculate shipping or mailing items’ GHG emissions based on their characteristics, such as product type, size, weight, processing, distribution and transportation.

This no-fee service provides our business customers with monthly, quarterly and annual reports. The reports detail a business customer’s GHG emissions associated with the Postal Service’s entire delivery process, identifying the incremental emissions associated with the customer’s mailings, and its share of emissions necessary to support the entire USPS network.

Carbonfund logo Foundation has reviewed the methodology used for the USPS BlueEarth Carbon Accounting Statement and determined it is consistent with the carbon neutrality criteria for eligibility in the Carbonfree Shipping program. USPS business customers interested in offsetting emissions can purchase carbon credits using official calculation results from the USPS BlueEarth Carbon Accounting Statement. is the country’s leading carbon reduction and offset organization. educates the public about climate change and makes it easy and affordable for individuals, businesses and organizations to reduce their climate impact. Learn more at