Post offices and mail carriers along the Front Range and on the eastern plains are back in business today, after suspending most service around noon on Wednesday and sitting idle yesterday.
There were deliveries in Pueblo and a few spots in Colorado Springs and north of the Denver metro area.
U.S. Postal Service spokesman Al DeSarro says there's literally three days worth of mail to deliver, and postal workers are doing the best they can in this situation.
Postal employees, including managers, will work 12-hour shifts or longer.
DeSarro says workers NOT scheduled to be on duty are being asked to come in.
He says the biggest problem is incoming items that need to be delivered, NOT outgoing items -- since most people have already sent theirs.
DeSarro is urging people to clear paths around mailboxes to make things a little easier -- and safer -- for mail carriers.