When word spread, pleadings from local politicians and townsfolk persuaded the Postal Service to allow volunteers to stamp the special Reindeer Station postmark on the 80,000 letters and cards that come in from across the country.
Close to 75 people, including a few retired postal workers, have signed up to work daily shifts.
"I'm retired, and I always thought this was a great service," said Mace Brumbaugh, who brought her own bag of Christmas cards to mail.
Some people drive for hours with bundles of mail to get the postmark. But most out-of-towners send their cards, letters, and packages to Rudolph by mail.
No one seems to remember when the tradition started. The post office got permission in the early 1990s to add a drawing of the famous reindeer to its postal cancellation during December.
The post office doesn't see much traffic in the other months, and with the Postal Service facing huge financial losses, the staff was cut from two to one in October.
Lamb knew that giving up the holiday postmark would be tough, especially after telling one customer. "When I told him we're not doing it this year, his mouth about hit the floor," she said.
The reindeer stamp generates about $8,000 to $10,000 in revenue for the post office. Without that money, it might not survive, said State Rep. Randy Gardner, who reached out to the Postal Service, which allowed the volunteers to take over the work.
"So Rudolph was saved," Gardner said.