Mass. Gen. Laws ch. 175 § 22D
There shall be no liability on the part of and no cause of action of any nature shall arise against the commissioner of insurance, employees of the division of insurance, the board of appeal established by section eight A of chapter twenty-six, any of its employees or against any insurer, its authorized representative, its agents, its employees, or any firm, person or corporation furnishing to the insurer information as to reasons for cancellation, for any statement made by any of them in any written notice of cancellation, or in any other communication, oral or written specifying the reasons for cancellation, or the providing of information pertaining thereto, or for statements made or evidence submitted at any hearings conducted in connection therewith.
Mass. Gen. Laws ch. 175, § 22D