The U.S. Postal Service expects 658 million pieces of mail to move Monday alone.
As long lines and short tempers challenge the best of our holiday intentions, those precious minutes at the post office might be a good time to reflect on why we ship what we ship.
"This is not as bad as I thought, given the cars in the parking lot," said Alice Leidel while waiting in line at the post office.
Josh Teslaa said he won't get to see his in-laws this Christmas, but he is sending them gifts.
"We always worry about spending too much money around Christmas," Teslaa said. "It's nice that we're able to do it. I know some people probably aren't able to do as much, and we are able to. And so we're happy we can do it."
On this busiest shipping day of the year, many were waiting at post offices with packages to be shipped all over the globe.
"This love is going to New Mexico to a dear friend," said Christine Reeb.
"This is a package going to Malaysia," said Bobby Pagas.
"This is going to my pen pal of 20 years in Norway," said Christine Lee. "It's about joy and peace and (sending this package) is giving me a lot of joy."
The shipping process is teachable moment for mother Marie Pope and her little helpers.
"It was great because everything we shipped they made, and so now they see the whole process," Pope said. "It's thinking about the people you love and showing that love in a little way."
The deadline for first-class mail is Dec. 20 for arrival by Christmas. The priority mail deadline is Dec. 21, and express mail should be sent by Dec. 22.