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Transactional vs Promotional SMS in India

Key differences between transactional and promotional SMS in India. Header types, timing restrictions, DLT templates, DND rules, consent, routing, and costs explained.

StartMessaging Team·11 Feb 2026·9 min read

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Industry & Compliance

OTP Data Privacy: DPDP Act Compliance

How India's Digital Personal Data Protection Act affects OTP and SMS implementations. Phone numbers as personal data, consent, retention, and compliance checklist.

StartMessaging Team·9 Feb 202610 min read

Industry & Compliance

TRAI SMS Regulations in 2026: What Changed

Latest TRAI SMS regulations for 2026 covering DLT enforcement, scrubbing, content templates, promotional timing, and consent rules. What developers need to know.

StartMessaging Team·5 Feb 202610 min read

Industry & Compliance

DLT Template Approval: Tips to Get Approved

Learn how to write DLT SMS templates that get approved on the first attempt. Template types, variable syntax, rejection reasons, and operator-specific tips.

StartMessaging Team·21 Jan 20269 min read

Industry & Compliance

What Is DLT Registration? A Developer Guide

Understand TRAI's DLT registration mandate for SMS in India. Learn the process, portals, timelines, costs, and how to skip DLT entirely with StartMessaging.

StartMessaging Team·16 Jan 202610 min read

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