And the continuing crisis in the nation's mail system is another, making people wary of opening unsolicited or strange-looking letters.
Finally there is the 'letter', free, unsolicited and mailed.
Or maybe she was simply being paranoid, but KC didn't feel like reading unsolicited letters.
Or when, the day after closing the deal on a new home, unsolicited letters from mortgage insurance and interior design companies start arriving.
Last year, for instance, credit card companies sent out some four billion unsolicited letters offering consumers new credit cards.
In the run up to the 2005 general election, Moran sent out thousands of unsolicited letters to her constituents.
Hersh wrote Rainwater an unsolicited letter in 1987, asking for a job and explaining his ideas on fund management.
But an unsolicited letter is not usually the most effective strategy, recruiters say.
The idea was inspired by unsolicited letters that customers send to Rockport, describing personal experiences with their shoes.
Those complaints - usually in the form of unsolicited letters to the courts, reporters and lawyers - are often ignored.