103 CMR 948.04
Postage Free Mail
Written policy and procedure shall specify that indigent inmates shall be permitted:
(1)
An unlimited number of postage-free letters each week for privileged confidential
correspondence, excluding attorneys;
(2) Three postage-free letters each week for general correspondence; and
(3) Sheriffs or designees may develop procedures to allow indigent inmates to mail postage-free
letters each week to their attorneys of record on any pending criminal matter.