N.Y. Tax Law § 35
* § 35. Use of electronic means of communication. Notwithstanding any other provision of New York state law, where the department has obtained authorization of an online services account holder, in such form as may be prescribed by the commissioner, the department may use electronic means of communication to furnish any document it is required to mail per law or regulation. If the department furnishes such document in accordance with this section, department records of such transaction shall constitute appropriate and sufficient proof of delivery thereof and be admissible in any action or proceeding. Provided, however, that if a taxpayer uses a department system to access taxpayer information, including, but not limited to, notices, documents and account balance information, that is not an electronic communication furnished in lieu of mailing in accordance with this section, such accessed information shall not give the taxpayer the right to a hearing in the division of tax appeals, unless the right to protest such information is expressly authorized by this chapter or another provision of law. * NB There are 2 § 35's