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Getting started requirements

A domestic SMS delivery service for business customers. Learn what's needed to onboard and go live in a few steps.

Coverage

For business customers

The service is for businesses registered in mainland China; get started once your company verification is complete.

All three major carriers

Supports mainland China mobile numbers with full coverage of China Mobile, China Unicom and China Telecom.

Standard number format

Recipient numbers use the international E.164 format; the mainland China country code is +86 (e.g. +8613800138000).

Template & signature registration

Messages are sent via templates and signatures, which need compliance registration first — we assist you throughout.

Just have these ready

  • Business license and verification for compliance checks
  • The signatures and templates you plan to use (we help with registration)
  • A callback URL for result notifications (optional, for real-time delivery tracking)

Compliant, made easy

Built-in rate control, content compliance, opt-out and sending-window management hold the compliance line for you. You control sensitive content like verification codes — we just deliver it reliably.

Frequently asked questions

Which phone numbers are supported?+

Mainland China mobile numbers, covering China Mobile, China Unicom and China Telecom. Pass numbers in E.164 format (e.g. +8613800138000).

Does the platform generate the verification code?+

No. Your system generates the code; the platform only delivers it reliably — it neither generates, stores nor validates it, reducing your compliance burden.

How fast is delivery?+

SMS typically arrives within seconds. A message-validity mechanism ensures expired codes aren't sent or billed, so users aren't bothered.

What if a message fails or isn't received?+

Every message status is traceable in real time, with clear causes and suggested fixes for self-service. Built-in high availability does its best to improve delivery.

How do I test before going live?+

A sandbox lets you experience the full sending flow with test credentials and magic numbers at zero cost, so you validate before production.