Navigating Global Messaging Regulations
Enterprise messaging operates under strict regulatory frameworks that vary by country and region. Non-compliance results in fines, operator blocking, and reputational damage. This handbook covers the major regulatory regimes your messaging infrastructure must comply with.
India: TRAI Regulations
DND (Do Not Disturb) Compliance
The Telecom Regulatory Authority of India (TRAI) maintains a national DND registry. Messages to DND-registered numbers are restricted to transactional content between 9 AM and 9 PM.
Transactional messages (OTP, bank alerts, order updates) can be sent to DND numbers. Promotional messages cannot be sent to DND numbers under any circumstances.
NDNC Registry
The National Do Not Call registry is integrated with the DLT (Distributed Ledger Technology) platform. Before sending promotional messages, scrub your database against the NDNC registry.
DLT Registration
All enterprise senders must register on the DLT platform with:
- Principal Entity (PE) registration
- Header (sender ID) registration
- Template registration and approval
Each message template must be pre-approved on DLT. Content templates with variable parameters require clear mapping documentation.
Template Categories
- Service Explicit: Transactional messages with customer consent
- Service Implicit: Messages triggered by customer actions (OTP, transaction alerts)
- Promotional: Marketing messages to non-DND opted-in users
European Union: GDPR
Consent Requirements
GDPR requires explicit, informed consent before sending marketing communications. Consent must be freely given, specific, and withdrawable. Pre-checked boxes and bundled consent do not comply.
Data Subject Rights
Users can request access to their messaging data, request deletion, and withdraw consent at any time. Your systems must support these rights within 30 days.
Cross-Border Transfers
Sending messages to EU residents from non-EU infrastructure requires adequate data protection safeguards — Standard Contractual Clauses (SCCs) or adequacy decisions.
United States: TCPA and CTIA
TCPA (Telephone Consumer Protection Act)
Requires prior express consent for marketing messages and prior express written consent for autodialed/prerecorded calls. Consent must be specific to the calling/texting party.
CTIA Guidelines
The Cellular Telecommunications Industry Association sets carrier-level guidelines:
- Opt-in confirmation required
- STOP/HELP keyword support mandatory
- Maximum message frequency disclosure
- Clear sender identification
Global Best Practices
Consent Management
Implement a centralized consent management platform that tracks consent source, timestamp, scope, and withdrawal status across all channels.
Opt-Out Processing
Process STOP requests within 24 hours. Maintain a persistent suppression list that prevents re-solicitation even if the user re-engages.
Record Keeping
Maintain audit logs of all consent records, message deliveries, and opt-out processing for a minimum of 5 years for regulatory audit purposes.