Most questions are already answered
Check the FAQ before emailing — saves you waiting.
Questions about your order, activation, refunds, dealer accounts, or anything else? Pick the fastest channel below. We aim to reply to every email within 4 hours during business hours, and within 24 hours otherwise. We're a Shabbat-observant business — emails sent Friday afternoon through Saturday night get answered Sunday morning.
All times are US Eastern (ET). MeiSIM USA is a Shabbat-observant business — we're closed from Friday afternoon through Saturday night. Outside of business hours your order is still processed automatically; email responses just take longer.
* Friday closing time varies by season — earlier in winter (around 2 PM ET) when Shabbat begins early, later in summer (around 5 PM ET).
Check the FAQ before emailing — saves you waiting.
We CAN help with: order issues, activation problems, refund requests, dealer onboarding, API integration questions, finding the right plan, multi-line discounts, and anything related to your MeiSIM account.
We CAN'T help with: AT&T account-level changes (call AT&T directly), unrelated carrier troubleshooting (call your carrier), device repair, lost-phone recovery (your carrier and Apple/Google handle these), or non-MeiSIM eSIM products from other resellers.
Email: typically <4 hours during business hours, <24 hours otherwise.
Live chat (AI): instant, 24/7 — never closed.
Live chat (human agent): <15 minutes during business hours; unavailable Friday afternoon through Saturday night.
Telegram bot: instant for self-service (orders, top-ups, status); human replies queued during Shabbat and answered Sunday morning.
Order processing: fully automated — your eSIM/QR code is delivered within minutes of payment regardless of time or day. Shabbat only affects human support, not your purchase.
For postal mail, dispute notices, or compliance correspondence:
MeiSIM USA
c/o Customer Operations
Wilmington, Delaware, USA
Postal mail is monitored monthly. For anything time-sensitive, email is much faster.
For press inquiries, integration partnerships, affiliate programs, or anything strategic, email support@meisimusa.com with subject line starting with [Business], [Press], or [Partner] and we'll route to the right person.