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The Marketing SMS API handles mass text campaigns through gateways such as Gupshup, Twilio, Sinch, and AWS SNS. It includes automated DLT template matching for India regulatory compliance, branded URL shortening, and click tracking.

Endpoints Summary

Team Inbox Message Scheduling


DLT Compliance & Segment Rules

For Indian telecommunications traffic, all commercial SMS must include a registered Entity ID, Header (Sender ID), and approved DLT Template ID. Unregistered messages will be rejected by telecom operators at the gateway.
  • GSM 7-bit Encoding: 1 credit per 160 characters. Messages above 160 characters concatenate into 153-character segments.
  • Unicode Encoding (Hindi/Regional): 1 credit per 70 characters. Messages above 70 characters concatenate into 67-character segments.

Create SMS Campaign

Request Body

Request Example


Calculate Cost Estimate

Calculates required gateway credits and estimated billing based on message length and audience size.

Request Body

Response Example


Dispatch Campaign

Transfers recipient batches into BullMQ for high-throughput gateway delivery.

Get Analytics & Click Tracking