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  • Using your Twilio account
  • SuperTokens SMS service
  • Custom method with full control

By default, if nothing is configured, the SDK will send SMSs using our APIs ( This is rate limited and is only meant for development / demo purposes.

You can learn more about each of these methods in the "SMS Delivery" section under "Auth Flow Customizations" (find it in the navigation list on the left).

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Which UI do you use?
Custom UI
Pre built UI