New York Laws
Article 1 - General Provisions
1-106 - Filing of Papers; When Received.

(b) Any equivalent of registered or certified mail designated by the
United States secretary of the treasury, or as may be designated by the
state board of elections pursuant to the same criteria used by such
secretary for such designations pursuant to section seventy-five hundred
two of the internal revenue code, shall be included within the meaning
of registered or certified mail as used in this chapter. If the state
board of elections finds that any equivalent of registered or certified
mail designated by such secretary or the state board of elections is
inadequate for the needs of the state, the state board of elections may
withdraw such designation for purposes of this article.