This sounds like a “postal banking system,” some countries have done it. The US had it at one point. https://en.m.wikipedia.org/wiki/United_States_Postal_Savin

This sounds like a “postal banking system,” some countries have done it. The US had it at one point. https://en.m.wikipedia.org/wiki/United_States_Postal_Savings_System https://en.m.wikipedia.org/wiki/United_States_Postal_Savings... > The United States Postal Savings System was a postal savings system signed into law by President William Howard Taft and operated by the United States Post Office Department, predecessor of the United States Postal Service, from January 1, 1911, until July 1, 1967. Bernie Sanders and Liz Warren have suggested bringing it back.