Providing on-line non-downloadable software for use in connection with shipping and delivery services, namely, software for the creation and provisioning of labels, for address verification, for rating and reviewing carriers and delivery service providers, and for providing information and notifications regarding pickup, transportation, fulfillment, and delivery of packages and letters sent through various modes of transportation; Application service provider featuring application programming interface (API) software; Measurement and verification of carbon dioxide and other greenhouse gas emission offsets; Application service provider featuring application programming interface (API) software for use in management, coordination, and visualization of carbon emissions footprint calculations, purchase of carbon removal offsets, and investment in carbon sequestration projects; Application service provider featuring application programming interface (API) software for allowing the user to identify and order negative carbon emissions credits from verified carbon removal projects; Application service provider featuring application programming interface (API) software for calculation of carbon emissions footprints; consultancy, information and advisory services to all the aforesaid goods and services