reminders@filenewyorksalestax.com
Useful things to include: which page, what looks wrong, and — where you have one — the bulletin, form or notice that shows the current figure. Most messages get a reply, but this is a one-person site covering several states, so response time varies and nothing here is a support desk with guaranteed turnaround.
What this address is not for
It does not reach the New York State Department of Taxation and Finance, cannot help with a return, a notice, a refund or an account, and nothing sent here is read by anyone at the Department. For any of that, go directly to tax.ny.gov or call the number on a notice you've received from the Department.
Before you write in
If the question is "what does the Department say about X," the fastest answer is usually the source cited on the relevant page — every figure here links to the bulletin or publication behind it. If the question is about your own specific situation, that's exactly the kind of thing this site's disclaimer says it can't answer: consult a professional or contact the Department directly.