Post-argument and post-submission communications to the court concerning motions and appeals, in the form of letters, memoranda or briefs, are not permitted and will be returned to the sender, unless specifically requested or authorized by the Court of Appeals or authorized, in writing, by the clerk of the Court of Appeals upon submission to the clerk with a request that they be accepted.
N.Y. Comp. Codes R. & Regs. Tit. 22 § 510.14