According to the USPS official website the Postal Service processes and delivers 472.1 million mail pieces each day.
On multiple occasions, President Trump has expressed doubts over the USPS's ability to handle the extra election mail. Further, USPS, in a statement to CNN, the Postal Service has ample capacity to adjust its nationwide processing and delivery network to meet projected Election and Political Mail volume, including any additional volume that may result as a response to the COVID-19 pandemic. BBC reported that experts say the post office could easily absorb the expected influx of mail, even if every single eligible American were to vote by mail in November. In the week before Christmas, the USPS typically delivers around 2.5 billion letters or about 500 million cards per day. While the agency has been grappling with shaky finances and mounting debt for years, the Postal Service could handle a vote-by-mail election, even if every one of the nation’s more than 150 million registered voters stuck their ballot in a mailbox, according to experts quoted in a report published by The Atlantic.