DLT Registration for
Bulk SMS in India — Complete Guide
Every business sending bulk SMS in India must register on a TRAI-approved DLT platform. BookMySMS provides free, end-to-end DLT registration assistance — we handle document submission, entity registration, sender ID approval, and template submission on your behalf. Telecom operator fees (₹5,900) are paid by the client. Start messaging legally in days, not weeks.
(incl. GST)
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What is DLT and why is it mandatory?
DLT (Distributed Ledger Technology) is a blockchain-based platform mandated by TRAI under the Telecom Commercial Communications Customer Preference Regulations (TCCCPR), 2018. It was introduced to curb unsolicited commercial communications (spam) and bring transparency to the bulk SMS ecosystem in India.
Every stakeholder in the SMS delivery chain — enterprises (senders), telemarketers, aggregators, and telecom operators — must register on a DLT platform. The system ensures end-to-end traceability: every SMS can be traced back to the originating entity, the approved template, and the registered sender ID.
4-step DLT registration made simple
BookMySMS handles the entire process for you. Here’s what happens behind the scenes.
Entity Registration
Register your business as a Principal Entity (PE) on any TRAI-approved DLT platform.
- Choose a DLT platform (Jio, Airtel, Vi, etc.)
- Submit business details & documents
- Receive unique Entity ID (PE ID)
- Timeline: 2–7 working days
Sender ID (Header)
Register your brand’s 6-character sender ID that recipients see when they receive your SMS.
- 6 alphanumeric characters (e.g., BKMSMS)
- Must relate to your brand name
- Unique across DLT ecosystem
- Timeline: 1–3 working days
Template Approval
Submit your SMS content templates with variables for dynamic data (names, OTPs, amounts, etc.).
- Use
{#var#}for dynamic content - Fixed text must match exactly
- Each template gets a unique ID
- Timeline: 1–5 working days
Consent Registration
Register consent records for promotional & service-explicit SMS to comply with DND/NCPR rules.
- Define consent collection method
- Upload recipient consent records
- Must be auditable & verifiable
- Required for promotional SMS
TRAI-approved DLT platforms in India
You only need to register on one platform — registration is shared across all telecom operators. TRAI caps the fee at ‘5,000 + 18% GST = ‘5,900 (BSNL: ‘3,300). Additional platform registrations are free.
Jio TrueConnect
Airtel DLT
Vodafone Idea (Vilpower)
BSNL DLT
MTNL DLT
Tata Teleservices
Videocon DLT
Free Assistance by BookMySMS
One-time fee per platform. Header & template registration is free. Registering on additional platforms after the first is also free. Annual renewal may be required.
Documents required for DLT registration
Requirements vary by entity type. Keep these ready before starting your registration.
Common Documents (All Entity Types)
- PAN Card of the entity
- Authorised signatory’s ID proof (Aadhaar / Passport / Voter ID)
- Letter of Authorization on company letterhead
- Active email ID and mobile number for OTP verification
| Entity Type | Additional Documents |
|---|---|
| Pvt/Public Company | Certificate of Incorporation (CIN), GST Certificate, MOA/AOA |
| LLP | LLP Agreement, Certificate of Incorporation (LLPIN), GST Certificate |
| Partnership Firm | Partnership Deed, GST Certificate, Registration Certificate |
| Proprietorship | GST Certificate or Udyam Registration or Shop & Establishment Certificate |
| Society / Trust | Registration Certificate, Trust Deed / Governing Body Resolution |
| Government Body | Government Order / Letter on official letterhead, Department details |
4 types of SMS under DLT classification
TRAI classifies all commercial SMS into four categories. Each has different delivery rules, DND behaviour, and timing restrictions.
Transactional SMS
Category 0Triggered by user action — OTPs, order confirmations, account alerts, banking notifications. No promotional content allowed.
Promotional SMS
Category 1Marketing messages, offers, discounts, sales campaigns. Purely commercial intent. Requires explicit consent from recipient.
Service — Implicit
Category 2Messages to existing customers based on ongoing relationship — policy renewals, subscription updates, service reminders. May contain mild promotional element.
Service — Explicit
Category 3Service messages sent based on explicit opt-in consent from recipient. User actively chose to receive these updates via form, SMS, or website.
What gets approved — and what gets rejected
Template approval is the most common bottleneck. Follow these rules to get first-time approval.
Approved Templates
- Clear, legitimate business purpose
- Proper use of variables:
{#var#}for dynamic content - Content matches the declared category (transactional/promotional/service)
- Brand name or identifier included
- Only whitelisted, full URLs (no URL shorteners like bit.ly)
- Whitelisted callback phone numbers
Rejected Templates
- Promotional content in transactional templates (e.g., discount codes in OTP messages)
- Unregistered or shortened URLs (bit.ly, tinyurl, etc.)
- Phone numbers not whitelisted on DLT
- Too many variables with too little fixed text
- Misleading, deceptive, or prohibited content
- Duplicate templates already registered
Template Examples
Penalties for non-compliance
TRAI enforces strict penalties for DLT violations. Here’s what’s at stake.
Message Blocking
SMS sent without valid DLT entity ID, registered header, or approved template are automatically blocked by all telecom operators. Zero delivery.
Entity Suspension
Repeated violations or misuse can lead to suspension of your entire DLT entity — blocking ALL your SMS traffic across all operators.
Blacklisting
For unregistered telemarketers sending UCC: disconnection for up to 2 years on first offence, and permanent blacklisting for repeat offenders.
Financial Penalties
Sending promotional SMS to DND-registered numbers without consent, or outside permitted hours (9 AM – 9 PM), attracts per-message financial penalties as per TCCCPR framework.
Header & Template Deactivation
Misused headers and non-compliant templates can be deactivated across all operators, instantly stopping all messages using that sender ID or template.
How we make DLT stress-free
5,000+ businesses have completed their DLT registration through BookMySMS — hassle-free.
Free Registration Assistance
We handle the entire DLT process for our SMS plan clients — document submission, entity registration, headers, templates, and consent — at zero service charge. Telecom operator fees paid by client.
Fast-Track Approvals
Our team knows what DLT platforms look for. We prepare documents and templates that get approved first-time — avoiding weeks of back-and-forth rejections.
Template Drafting
We draft TRAI-compliant SMS templates for you, ensuring proper variable usage, whitelisted URLs, and correct category classification for maximum approval rate.
Dedicated Support
A dedicated account manager guides you through every step. Call, email, or WhatsApp us anytime — Mon to Sat, 9 AM to 7 PM.
TRAI Update Monitoring
We continuously monitor TRAI regulatory changes and proactively update your DLT configuration — so you never fall out of compliance.
Lowest SMS Rates
Once registered, enjoy some of the lowest SMS rates in India — starting from ‘0.10/SMS. Direct operator connectivity. No middlemen.
Frequently asked questions about DLT registration
Q1. What is DLT registration for bulk SMS?
DLT (Distributed Ledger Technology) is a blockchain-based platform mandated by TRAI under TCCCPR 2018. Every business sending commercial SMS in India must register as a Principal Entity (PE) on a DLT platform, register sender IDs (headers), and get SMS templates pre-approved before sending any messages.
Q2. Can I send SMS without DLT registration?
No. TRAI mandates that all commercial SMS must have a valid PE ID, registered header, and approved template. Messages without these are automatically blocked by telecom operators. There are no exceptions — this applies to all businesses regardless of size.
Q3. How much does DLT registration cost?
DLT entity registration costs ‘5,900 (incl. GST) on most platforms (Jio, Airtel, Vi, MTNL, Tata, Videocon) and ‘3,300 on BSNL. Header and template registration is free after entity approval. BookMySMS provides free registration assistance — document submission, approvals, and template help — for SMS plan clients. Telecom operator fees are paid by the client.
Q4. How long does DLT registration take?
Entity registration takes 2–7 working days. Header approval takes 1–3 working days. Template approval takes 1–5 working days. With BookMySMS assistance, the entire process is typically completed within 3–5 business days.
Q5. Do I need to register on all DLT platforms?
No. You need to register on only one DLT platform. Your registration is shared across all telecom operators. BookMySMS helps you choose the best platform based on your requirements — most businesses register on Jio TrueConnect, Airtel DLT, or Vodafone Idea Vilpower.
Q6. What if my SMS template gets rejected?
Template rejections usually happen due to promotional content in transactional templates, use of URL shorteners, or missing whitelisted URLs. BookMySMS reviews and fixes your templates for free before resubmission, ensuring they meet all DLT requirements.
Q7. Can I use the same DLT registration for multiple brands?
One DLT entity registration can have multiple headers (sender IDs) for different brands or departments. However, each header must be separately registered and approved. If your brands operate as separate legal entities, each needs its own DLT registration.
Q8. What is PE Chain Validation?
PE Chain Validation verifies the entire message delivery chain: Principal Entity ID → Telemarketer ID → Header → Template ID. Every message must carry valid chain data. If any link is missing or invalid, the message is blocked. This was fully enforced across all operators from 2023.
Q9. What are the penalties for sending SMS without DLT?
Messages are automatically blocked. Repeat violations can lead to entity suspension (blocking ALL your SMS traffic), header deactivation, financial penalties for DND violations, and in severe cases — disconnection for up to 2 years or permanent blacklisting.
Q10. Can I use URL shorteners in SMS templates?
No. TRAI requires all URLs in SMS templates to be full, whitelisted URLs registered on the DLT platform. URL shorteners like bit.ly, tinyurl, or custom short domains are generally not allowed unless the shortener domain itself is whitelisted — which most platforms don’t permit.
DLT registration for every sector
We’ve helped businesses across every industry get DLT-registered and start sending SMS legally in India.
Get your DLT registration done
in 3–5 days — hassle-free
Our team handles entity registration, sender ID approval, template drafting & submission across all TRAI-approved DLT platforms — completely free for our SMS plan clients. You provide the documents, we do everything else.