Mass. Gen. Laws ch. 167B, § 8
(a) The terms and conditions of electronic fund transfers involving a consumer's account shall be disclosed, in writing, before the consumer contracts for an electronic fund transfer service. Such disclosures shall be in readily understandable language and shall include, to the extent applicable:
(12) A statement that any documentation provided to the consumer which indicates that an electronic fund transfer was made to another person shall be admissible as evidence of such transfer and shall constitute prima facie proof that such transfer was made.
[There is no clause (13).]