Every Door Direct Mail allows a business owner to punch in an area code, or simply circle it with a mapping tool, and send its mailers to every house and/or business in the area. They can drop off the mailers at the Post Office, and the pieces are funneled to the correct carrier route.

Post Office spokeswoman Patricia Licata said research the agency conducted found that a majority of small businesses weren’t using direct mail — primarily because they find it complicated.

“We thought this was a growth opportunity for us,” she said. A six-month trial run of Every Door generated $153 million in revenue, she added.

Licata said Every Door is an improvement over the previous system, when businesses needed correct addresses for direct-mail contacts and were required to hold a permit for sending out reams of flyers and the like.

“This takes the scary out of mail,” she said.