The reason why it doesn't exist is licensing and a bunch of regulatory processing that needs to be done to keep the license. Lob, as a mail provider, built and

The reason why it doesn't exist is licensing and a bunch of regulatory processing that needs to be done to keep the license. Lob, as a mail provider, built and licenses this from the USPS for its mail operations but is unable to sell it to customers due to licensing and regulatory issues. Similarly, SmartyStreets used to sell this service but discontinued it due to the amount of regulatory and reporting work that was required to keep the licensing rights. Source: I used to work at Lob and helped build those systems.