The quantity of mail an inmate can send is determined by what factors?

The quantity of mail an inmate can send is primarily influenced by their available funds and the number of stamps they possess. Incarcerated individuals typically rely on their personal funds to purchase postage, as they often need to buy stamps from the correctional facility's commissary. The financial aspect governs how much mail an inmate can send, since without stamps, they cannot send letters.

In many facilities, the number of stamps held by the inmate acts as a direct limit on the number of mail pieces they can send out, thereby making funds a crucial consideration in determining mail quantity. This practical approach allows inmates to maintain communication while also adhering to the controlled environment of correctional facilities.