The U.S. Postal Service is blaming cheap envelopes for a spate of damaged Christmas cards this holiday season.
Inexpensive envelopes made by a Scranton, Pa.-based paper company jammed letter-processing machinery, said Rich Watkins, spokesman for the Kansas City-based U.S. Postal Service Mid-America District.
Requests for comment from the Paper Magic Group Inc. were not returned on Thursday.
The processing and distribution center located in the Main Post Office at 500 West Chestnut Expressway saw a spike in jams due to the envelopes, Watkins said.