What is DLT and How to Register? (Complete Beginner Guide)

If you want to send Bulk SMS or OTP messages in India, you must understand what DLT is. This guide explains DLT in simple terms and shows how businesses can register step by step.

What is DLT?

DLT stands for Distributed Ledger Technology. In SMS marketing, DLT is a system introduced by TRAI (Telecom Regulatory Authority of India) to stop spam messages and protect users.

Every business sending SMS in India must register on a DLT platform to send:

• Promotional SMS
• Transactional SMS
• OTP messages

Why DLT is Mandatory?

• Prevents spam and fraud messages
• Protects customer consent
• Ensures transparency in SMS communication
• Improves SMS delivery and trust

Who Needs DLT Registration?

DLT registration is required for:

• Businesses sending bulk SMS
• Websites sending OTP for login or signup
• E-commerce platforms
• Banks, fintech, and service providers
• SMEs and startups

What You Register on DLT

• Entity: Your business identity
• Sender ID: SMS header name
• Templates: Approved message formats
• Consent: User opt-in records

Documents Required for DLT Registration

• GST Certificate or Business Proof
• PAN Card
• Company Letterhead
• Authorized Signatory Details

How Long Does DLT Approval Take?

DLT registration usually takes:

• Entity approval: 1–3 working days
• Sender ID approval: 1–2 working days
• Template approval: Same day to 2 days

Common DLT Registration Mistakes

• Incorrect business details
• Mismatch in sender ID and brand name
• Using unapproved templates
• Not following TRAI guidelines

Final Thoughts

DLT registration may seem complex at first, but it is essential for secure and reliable SMS delivery in India. Once completed, your business can send OTP and bulk SMS smoothly without delivery issues.