http://chiefmarketer.com/blog/sound-business-or-way-keep-post-offices-open
A year after the U.S. Postal Service launched its Every Door Direct Mail program, the USPS has pulled in more than $153 million in revenue from small local businesses it’s convinced to market through the mails. The program is a saturation mail service that charges as little as 14.5 cents per piece -- lower than comparable standard mail rates -- and lets small local companies send as many as 5,000 pieces per day without requiring a postal permit, according to the USPS.
