Contact information

Millennium.nyc is an independently owned online retailer of collectible trading cards, sealed trading card game product, die-cast, figures and collector supplies. Below is our full business and contact information.

Business Details

Trading name: Millennium.nyc
Website: www.millennium.nyc
Operated by: Sweet Mamie NY LLC
Postal address: PO Box 3522, New Hyde Park, NY 11040, United States

How to Reach Us

Email: support@millennium.nyc
Phone: +1 929 777 4935
Contact form: millennium.nyc/pages/contact

Customer service hours: Monday – Friday, 9:00 AM – 5:00 PM Eastern Time (ET, UTC−5 / UTC−4 during daylight saving).
Closed Saturday, Sunday and US federal holidays.

We reply to every email within 1 business day. Phone calls are answered during the hours above; outside those hours, leave a message and we return calls the next business day. You will be talking to a real person, not a ticket system.

What to Contact Us About

  • Before you buy — condition, packaging, authenticity or availability questions. We answer pre-purchase questions every business day.
  • Order status and tracking — see Track Your Order first; email us if tracking has not moved for more than 5 business days.
  • Damaged, incorrect or missing items — contact us within 48 hours of delivery and keep all packaging.
  • Returns — all returns must be authorized before being sent back. See our Returns & Refunds Policy.

When you write, please include your order number, a short description of the issue, and photos where the question relates to condition or damage. It gets you a useful answer on the first reply.

Our Other Policies

Millennium.nyc · PO Box 3522, New Hyde Park, NY 11040, United States · support@millennium.nyc · +1 929 777 4935