New York Laws
Part 3 - Disclosure of Digital Assets to Fiduciary
13-A-3.3 - Disclosure of Content of Electronic Communications of Principal

(a) a written request for disclosure in physical or electronic form;
(b) a copy of the power of attorney expressly granting the agent
authority over the content of electronic communications of the
principal;
(c) an affidavit in which the affiant attests that the copy is an
accurate copy of the original power of attorney and that, to the best of
the affiant's knowledge, the power remains in effect; and
(d) if requested by the custodian:
(1) a number, username, address, or other unique subscriber or account
identifier assigned by the custodian to identify the principal's
account; or
(2) evidence linking the account to the principal.