Basically email for bills and Fedex or similar for private or rush items.
My medications currently come vie USPS. Do you realize how much more Fedex charges for a similar package?
There is also another problem with phasing out the United States Postal Service. It is a Constitutionally prescribed service. It would likely take an amendment to the Constitution or similar act of Congress to "phase it out."
jtk
"A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
- Sir Winston Churchill (1874-1965)