If long lines, big crowds and long wait times aren’t your thing, you might want to avoid the post office today, because for many people that won’t be an option.

Today is the last day to mail packages with the assurance they’ll be delivered in time for Christmas.

Postal officials said today, the Monday of the week before Christmas, is the busiest day of the year for postal workers.

The Colorado Springs Mail Processing Center is expected to postmark nearly a million cards and letters today, compared to the 425,000 they see on a regular day.

The state’s post offices combined are expected to handle 6 million holiday cards and 1.2 million packages.

Post offices nationwide will handle nearly a billion pieces of mail.

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