Inside the made-men machinations of MOB WIVES star RENEE GRAZIANO’s  prison pen pal gambit!

 Renee didn’t need to look any further than her own life for the inspiration behind her new business venture “Jail Mail”!

The 41-year-old mafia princess – daughter of imprisoned mobster Anthony Graziano – is launching a greeting-card service that will make it easier for people to send letters to their loved ones in prison.

In an exclusive ENQUIRER interview, Renee explains: “Prisoners have a lot of down time, and getting letters and packages is the highlight of their day.

But people on the outside sometimes are too busy to keep up with writing letters, or they forget, or they just don’t know how to express their thoughts – that’s where we step in.”

At the website, which is expected to launch in June, customers will be able to purchase customized stationery that can include uploaded personal pictures and get help with their letter-writing. The company will also store important dates like inmates’ birthdays and anniversaries in their database to make sure no major life event goes unnoticed.

“You just tell us where they’re doing time and we’ll make sure we get your cards and messages to them!” Renee says.

“Mob Wives,” a ratings hit for VH1, follows the lives of four women as they try to cope while their family members are serving prison time.

Renee, a Staten Island mom of one – a son, who also appears on the show – says she’ll handle designing and writing the cards and the letters, while her sister Jennifer, who produces “Mob Wives,” will oversee the business end.

Aside from her father, Renee’s ex-husband, Junior, is out on bail after being arrested during a massive organized crime sting in New York City in January.

She adds: “My family thinks the idea is genius!”