Promotional Bulk SMS India: The Complete 2026 Guide
- TechTo Networks
- Aug 29, 2025
- 18 min read
Your complete reference for promotional bulk SMS in India — covering TRAI's 2026 regulations, DLT registration, DND scrubbing rules, sender header formats, message templates, pricing benchmarks, campaign strategy by industry, real message examples, and a platform comparison. Written for marketers, business owners, and growth teams who want campaigns that actually deliver.
Table of Contents
What Is Promotional Bulk SMS?
Why Promotional SMS Still Outperforms Other Channels in India
TRAI Rules for Promotional Bulk SMS in India (2026)
DND — What It Means for Your Promotional Campaigns
DLT Registration: Step-by-Step for Promotional SMS
Promotional Sender Header: Formats & Rules
Writing Effective Promotional SMS Templates
Promotional Bulk SMS Pricing in India (2026)
How to Launch a Promotional Bulk SMS Campaign — Step by Step
Campaign Strategy: Timing, Frequency & Personalisation
Industry Playbook: Templates by Sector
Metrics That Actually Matter
Promotional SMS vs WhatsApp vs Email — Honest Comparison
Platform Comparison Table 2026
FAQs
1. What Is Promotional Bulk SMS?
Promotional bulk SMS is the practice of sending marketing or offer-based text messages in large volumes — simultaneously to thousands or millions of mobile numbers — to drive awareness, footfall, sales, or event attendance for a business.
In India, promotional SMS is formally defined by TRAI under the Telecom Commercial Communications Customer Preference Regulations (TCCPPR) as messages that promote or advertise products, services, businesses, or opportunities. This classification carries specific legal requirements: promotional SMS can only reach non-DND numbers, can only be sent between 10 AM and 9 PM IST, and every message must match a pre-approved DLT template using a registered sender header with the -P (Promotional) suffix.
What counts as "promotional"?
If the primary purpose of your message is to drive a commercial action — buying, visiting, registering, attending — it is promotional, regardless of how you phrase it. Common examples:
Flash sale and discount announcements ("50% off today only")
Seasonal or festive offers (Diwali, Dussehra, New Year)
New product or store launch announcements
Event invitations, webinar registrations
Loyalty point balance alerts with redemption nudges
App download or referral campaigns
⚠️ Important: If your message contains a marketing element AND a service element (e.g., "Your order is confirmed + here's 10% off your next order"), it must be sent as two separate messages on their respective routes — promotional and transactional. Combining them in one message on the transactional route is a TRAI violation.
2. Why Promotional Bulk SMS Still Outperforms Other Channels in India
With WhatsApp, Instagram, and push notifications all competing for attention, the case for SMS as a primary promotional channel needs evidence — not just assertion. Here it is.
Metric | Promotional Bulk SMS | Email Marketing | WhatsApp Broadcast | Social Media Ads |
Average Open Rate | 98% within 3 min | 20–25% | 70–75% | 2–5% (organic) |
Delivery to non-smartphone users | ✅ Yes | ❌ No | ❌ No | ❌ No |
Works without internet | ✅ Yes | ❌ No | ❌ No | ❌ No |
Delivery in Tier-2/3 cities | ✅ Consistent | Variable | Variable | Variable |
Cost per reach (1 lakh contacts) | ₹1,500–₹2,200 | ₹500–₹1,000 | ₹2,000–₹4,000 | ₹5,000–₹50,000+ |
Character limit | 160/part | Unlimited | 4,096 chars | Unlimited |
TRAI Compliance required | ✅ Yes | No | Meta policy | Platform policy |
The data tells a clear story: no channel reaches more Indians, on more device types, in less time, at a lower cost per reach than SMS. The 160-character constraint that marketers once saw as a weakness is actually its strength — your entire message gets read in 8 seconds.
India's particular advantage: with 230+ million DND-registered numbers, promotional SMS reaches a more qualified audience — people who haven't opted out — than almost any other channel's algorithmic filter.
3. TRAI Rules for Promotional Bulk SMS India (2026)
The TCCPPR (Telecom Commercial Communications Customer Preference Regulations) governs every promotional SMS sent in India. Updated in 2023 with AI-based scrubbing enforcement, these rules are non-negotiable. Violations result in sender header blacklisting, campaign blocking, or TRAI fines of up to ₹2 lakh per violation.
The 7 Core Rules Every Sender Must Follow
Rule 1 — DLT Registration is Mandatory Register your business (Principal Entity), sender header, and all promotional templates on a TRAI-approved DLT portal (Jio Trubloq, Airtel DLT, Vi DLT, or BSNL DLT) before sending a single message.
Rule 2 — Promotional SMS is Restricted to 10 AM – 9 PM IST Messages scheduled outside this window are dropped silently — not queued and delivered later, just lost. Platform scheduling tools that do not enforce this window will waste your credits.
Rule 3 — DND Numbers Cannot Receive Promotional SMS Your list must be scrubbed against India's National Consumer Preference Register (NCPR/NDNC) before every campaign. Attempting to send promotional SMS to DND numbers results in silent delivery failure.
Rule 4 — Content Must Match Your DLT-Approved Template Exactly TRAI's AI scrubbing engine (updated 2023) compares your live message against the approved template character by character, accounting for {#var#} variable fields. Deviation beyond the allowed threshold = blocked. No exceptions.
Rule 5 — Promotional Sender Headers Must End in -P Since May 2025, all promotional sender headers use the format [OPERATOR-CIRCLE]-[BRAND]-P. Example: VM-TXTNWP (Vodafone Mumbai, TechTo Networks, Promotional). The -P suffix is mandatory and visible to recipients.
Rule 6 — Every Promotional Message Must Include an Opt-Out Instruction TRAI requires a clear opt-out mechanism in every promotional message. Standard approved format: Reply STOP to opt out or SMS STOP to [number]. Absence of opt-out language is a TRAI violation.
Rule 7 — Consent Records Must Be Maintained For promotional SMS to non-DND numbers, consent must be documented. Under the DPDP Act 2023 (effective 2025), businesses must maintain digital consent records with timestamps for up to 3 years. Platforms like TechTo Networks include built-in consent logging.
4. DND — What It Means for Your Promotional Campaigns
The Do Not Disturb (DND) registry — officially called the National Consumer Preference Register (NCPR) — is maintained by TRAI and updated daily. As of 2026, over 230 million Indian mobile numbers are DND-registered.
What "DND scrubbing" means in practice
Before your promotional campaign is dispatched, your contact list must be run through the operator's DND scrubbing engine. This removes all registered DND numbers. TechTo Networks performs this scrub automatically before every promotional campaign — you see your effective deliverable count in the dashboard before hitting send.
The DCA (Digital Consent Acquisition) exception
TRAI provides a legal pathway to reach DND-registered numbers for promotional SMS: the Digital Consent Acquisition (DCA) process. A subscriber can grant explicit consent for a specific brand via an OTP-verified process through their telecom operator. This consent is valid for 12 months and recorded on the DLT Consent Register.
TechTo Networks supports DCA consent collection as an add-on for enterprise customers. This is particularly valuable for e-commerce brands, fintech apps, and loyalty programs where customers have explicitly opted in through your own platform but also happen to be DND-registered.
Promotional SMS delivery window + DND interaction
Scenario | Outcome |
Number NOT on DND, message sent 10 AM–9 PM | ✅ Delivered |
Number NOT on DND, message sent 9:01 PM–9:59 AM | ❌ Dropped (not queued) |
Number ON DND, no DCA consent | ❌ Silently blocked |
Number ON DND, valid DCA consent | ✅ Delivered (within time window) |
5. DLT Registration: Step-by-Step for Promotional SMS
DLT (Distributed Ledger Technology) registration is a blockchain-based system operated by Indian telecom operators under TRAI's mandate. Every message sent in India is validated against the DLT registry in real time. For promotional SMS specifically, the process has three mandatory stages.
Stage 1 — Entity (Principal Entity / PE) Registration
Register your organisation on any one of the four major DLT portals — they are interoperable and your registration is shared across all operators automatically.
DLT Portals:
Jio: Trubloq (trubloq.com)
Airtel: Airtel DLT (dlt.airtel.in)
Vi: Vodafone Idea DLT (vilpower.in)
BSNL: BSNL DLT (www.bsnl.co.in/dlt)
Documents required:
GST registration certificate (most common) or CIN/PAN + business address proof
Authorised signatory ID proof
Business email address
Fees: One-time ₹5,900 + GST on most portals (some operators offered waivers in 2025–26 — check current portal terms). Valid for life unless the entity is deregistered.
Stage 2 — Sender Header Registration (Promotional)
Register your 6-character promotional sender header. The format since May 2025 is: [OPERATOR-CIRCLE-CODE]-[YOUR-BRAND]-P. The header must match your registered entity.
Examples of valid promotional headers:
VM-FSHSLE-P (fashion sale brand)
AT-EDUMAX-P (education platform)
JI-FOODIE-P (restaurant chain)
Fee: ~₹500 + GST per header per year. Headers unused for 90 consecutive days are auto-deactivated by the operator — build this renewal into your compliance calendar.
Stage 3 — Promotional Template Registration
Every unique message format needs a pre-approved DLT template with category set to Promotional. Variable fields (customer name, discount amount, product name, expiry date, URL) must use the {#var#} placeholder.
Template approval timeline: 24–48 hours on average. Rejection rate for first-time submitters is ~30% — most commonly due to promotional content too aggressively worded, missing opt-out instruction, or URL not whitelisted.
Template that will be approved:
Hi {#var#}, get {#var#}% OFF on {#var#} today only. Shop at {#var#}
Valid till {#var#}. Reply STOP to unsubscribe. -{#var#}
Template that will be rejected:
URGENT!! You've been selected for EXCLUSIVE 80% MEGA SALE.
Click NOW: bit.ly/xyz Don't miss!!
(Reasons: ALL-CAPS urgency, non-whitelisted short URL, no brand name, no opt-out)
💡 TechTo DLT Assist: TechTo Networks handles entity registration, promotional header setup, template writing and submission as a free service on all paid plans. Average go-live: 2 business days. Start here →
6. Promotional Sender Header: Formats & Rules
Since TRAI's May 2025 update, promotional sender headers display with the full operator-circle-brand-category format to recipients. Understanding this format helps you choose a brand-appropriate header name within the 6-character limit.
Operator-Circle Codes (partial list)
Operator | Circle | Code |
Jio | All India | JI |
Airtel | Delhi | AT-DL |
Airtel | Mumbai | AT-MH |
Vodafone Idea | Karnataka | VM-KA |
Vodafone Idea | Tamil Nadu | VM-TN |
BSNL | Kerala | BN-KL |
Note: The display format the recipient sees is operator-determined. What you register is your 6-character brand identifier + -P suffix.
Best Practices for Choosing Your Header Name
Use your brand name or recognisable abbreviation: MYNTRA, BIGBZR, FOODIE
Avoid generic words: OFFERS, SALEEE, PROMO — these look spammy to recipients and TRAI may reject them
Choose a header you'll use long-term — changing it requires a new registration and 24–48h approval
If you operate multiple brands, register a header per brand for clear sender attribution
7. Writing Effective Promotional SMS Templates
The 160-character constraint of a standard SMS is not a limitation — it's a discipline. The best promotional SMS campaigns in India are those where every character earns its place.
The 5-Part Anatomy of a High-Converting Promotional SMS
[1-PERSONALISATION] Hi {#var#}, ← Name token if available
[2-OFFER] {#var#}% OFF on all ← Lead with the value
[3-PRODUCT/OCCASION]{#var#} this weekend ← Specific, time-bound
[4-CTA + URL] Shop: {#var#} ← Single, clear action
[5-OPT-OUT] Rply STOP to unsub ← TRAI mandatory
-[BRAND] ← Sender attribution
Full example (158 chars):
Hi Priya, 30% OFF on all Ethnic Wear this weekend. Shop at
yourstore.com/ethnic — Offer ends Sun 11:59 PM. Reply STOP. -YourBrand
10 Rules for Template Copy That Gets Approved and Converts
Lead with the offer, not the brand. "30% OFF on Electronics" > "YourBrand is pleased to offer a discount."
One CTA per message. Don't ask readers to visit a link AND call AND reply. Pick one.
Use real, whitelisted URLs. TRAI blocks bit.ly, tinyurl, and most third-party short URL services since 2023. Use your own branded short domain or full URL.
Avoid ALL CAPS and excessive punctuation. HUGE SALE!!! triggers TRAI's spam classifier.
Include the expiry. "Valid till Sunday" adds urgency without sounding desperate.
Personalise where possible. Adding the customer's first name using {#var#} increases response rates by 15–25% in Indian campaigns.
Regional language versions perform better in non-metro India. A Hindi or Tamil version of your campaign in Tier-2 cities typically delivers 25–40% higher click-through. Register a separate Unicode template.
Keep opt-out short. "Reply STOP" takes 10 characters. "To unsubscribe from future messages from YourBrand please reply with the word STOP" wastes 85 characters.
Don't promise what you can't deliver. TRAI and consumer protection law both apply.
Test with a sample list before full send. TechTo Networks allows test sends to 10 numbers before dispatching a full campaign.
Character Count Reference
Content type | Characters |
Standard ASCII SMS (1 part) | 160 chars |
Standard ASCII SMS (2 parts/316 chars) | Billed as 2 SMS credits |
Unicode SMS / regional language (1 part) | 70 chars |
Unicode SMS (2 parts/140 chars) | Billed as 2 credits |
Always preview your message in TechTo's dashboard — it shows character count, credit cost, and flags any characters that might trigger Unicode billing unexpectedly (e.g., curly quotes, em-dashes, rupee symbol ₹).
8. Promotional Bulk SMS Pricing India (2026)
Promotional SMS is the most price-competitive SMS category in India because volumes are high and margins are slim at the provider level. Here's a transparent, realistic breakdown.
TechTo Networks Promotional SMS Pricing
Volume (per month) | Price per SMS | Effective cost per 1,000 |
0 – 50,000 | ₹0.20 | ₹200 |
50,001 – 2,00,000 | ₹0.17 | ₹170 |
2,00,001 – 10,00,000 | ₹0.15 | ₹150 |
10,00,001 and above | ₹0.12 | ₹120 |
All prices include DLT registration, header setup, and operator-level delivery reports. No setup fee, no hidden charges.
What Drives Your Actual Cost Per Acquisition
The ₹/SMS rate is only the starting point. For promotional bulk SMS campaigns, your real metric is cost per response or cost per conversion — and that depends on:
List quality: A clean, opted-in list of 50,000 relevant contacts outperforms a scraped list of 5,00,000. DND-blocked numbers waste credits.
Template quality: A message with a personalised name token and specific offer will convert 2–4× better than a generic blast.
Timing: The same message sent at 12 PM converts significantly better than at 8:55 PM (just before the delivery window closes).
Frequency: Beyond 2–3 messages per week, unsubscribe rates in India spike sharply.
Prepaid vs. Postpaid
Prepaid packs are ideal for SMEs, seasonal campaigns, and first-time users. Credits typically have 12-month validity. No monthly commitment. Postpaid (invoice-billed) suits brands sending 10 lakh+ messages/month with predictable volumes.
9. How to Launch a Promotional Bulk SMS Campaign — Step by Step
Step 1 — Complete DLT Registration
Before anything else. Entity registration → promotional sender header registration → template registration. If you're already registered with TechTo, your DLT credentials are pre-loaded. If you're new, TechTo's DLT Assist team handles this end-to-end. Register here →
Step 2 — Build and Clean Your Contact List
Import your contacts as a CSV/Excel file. TechTo automatically:
Validates Indian mobile number format (10 digits, correct network prefix)
Deduplicates entries
Flags numbers with formatting errors
Do not purchase contact lists — unsolicited promotional SMS is a TRAI violation regardless of how the list was acquired, and purchased lists have notoriously poor engagement rates.
Step 3 — Run DND Scrubbing
TechTo runs your list against the NCPR/DND database before every promotional send. You'll see your campaign's estimated deliverable count before spending a single credit. This step is automatic but you can view the scrub report in your dashboard.
Step 4 — Select or Create Your DLT Template
Choose from your library of pre-approved promotional templates or submit a new one (24–48h approval). Map your personalisation variables (name, discount, expiry date, URL) to the corresponding contact list columns.
Step 5 — Preview and Test
Use TechTo's Send Test feature to dispatch your message to up to 10 numbers (yours, colleagues') to verify it reads correctly, links work, and the sender header displays as expected. A/B test two versions on small segments (5,000 contacts each) before committing to the full list.
Step 6 — Schedule for Optimal Time
Select Send Now or schedule for a specific date and time. TechTo enforces the 10 AM – 9 PM IST window automatically — if you accidentally schedule outside, the platform alerts you and suggests the next valid send window rather than silently dropping your campaign.
Step 7 — Monitor Real-Time Delivery Reports
Track per-operator delivery rates (Jio, Airtel, Vi, BSNL), failed counts with reason codes, and opt-out count in real time. Export full DLR reports as CSV for your CRM or reporting stack.
10. Campaign Strategy: Timing, Frequency & Personalisation
Best Times to Send Promotional Bulk SMS in India
Campaign timing has a dramatic effect on open rates and conversions. Based on aggregated delivery and click data from TechTo Networks campaigns across India:
Time Slot | Engagement Level | Best For |
10 AM – 12 PM | ⭐⭐⭐⭐⭐ Highest | Flash sales, morning commute offers, app downloads |
12 PM – 2 PM | ⭐⭐⭐⭐ High | Lunch deals, food delivery, retail offers |
5 PM – 7 PM | ⭐⭐⭐⭐⭐ Highest | Evening shopping, end-of-day deals, events |
7 PM – 9 PM | ⭐⭐⭐ Medium | B2C impulse purchases, entertainment |
2 PM – 5 PM | ⭐⭐ Lower | B2B, education, service reminders |
Day of week: Tuesday, Wednesday, and Thursday consistently outperform Monday (low attention, high email volume) and Friday–Sunday (leisure mode, competitive noise from other brands).
Festive season note: Diwali, Dussehra, Eid, Christmas, and Pongal are the highest-volume promotional SMS periods in India — and the most competitive. Start sending 3–5 days before the event date. On the event day itself, you're competing with every other brand's campaign simultaneously.
Frequency Guidelines
The Indian consumer's tolerance for promotional SMS is well-documented. Beyond these thresholds, unsubscribe rates rise sharply:
Retail & e-commerce: Max 3–4 messages per week per contact
Food delivery & restaurants: Max 5 per week (category tolerance is higher)
Education & healthcare: Max 2 per week
Real estate & financial services: Max 1 per week (high unsubscribe sensitivity)
Personalisation: The Single Biggest Lever
A promotional SMS with the recipient's first name and a specific (not generic) offer consistently outperforms a generic blast. Segment your list by:
Purchase history (send electronics offers only to contacts who bought electronics)
Location (city-specific store opening, regional festival offers)
Last engagement date (re-engagement campaign for contacts inactive 60+ days)
Loyalty tier (premium offers for top-spend customers)
TechTo Networks' campaign builder supports variable field substitution and contact-level segmentation from your CRM data — no coding required.
11. Industry Playbook: Promotional SMS Templates by Sector
These templates are written to pass DLT approval and convert. Replace {#var#} fields with your actual values before submitting for DLT approval.
🛒 Retail & E-Commerce
Flash Sale:
Hi {#var#}, FLASH SALE: {#var#}% off sitewide for next {#var#} hrs.
Shop: {#var#} Code: {#var#}. Ends at {#var#}. Reply STOP. -{#var#}
Cart Abandonment (Promotional):
Hi {#var#}, you left {#var#} in your cart. Complete your order & get
{#var#}% off: {#var#} Valid 24 hrs. Reply STOP. -{#var#}
New Arrival:
{#var#} just landed at {#var#}! Shop the new {#var#} collection before
it sells out: {#var#} Reply STOP to unsub. -{#var#}
🍕 Food & Restaurants
Weekend Offer:
Hi {#var#}, order from {#var#} this weekend & get {#var#}% off + free
{#var#}. Order: {#var#} Min order ₹{#var#}. Reply STOP. -{#var#}
New Outlet Launch:
{#var#} opens in {#var#} on {#var#}! First {#var#} customers get a free
{#var#}. Find us at {#var#}. Reply STOP. -{#var#}
🎓 Education & EdTech
Admission Open:
Admissions open for {#var#} batch at {#var#}! Early bird fee:
₹{#var#} (save ₹{#var#}). Apply: {#var#} Hurry, seats limited.
Reply STOP. -{#var#}
Free Webinar:
Hi {#var#}, join our FREE {#var#} webinar on {#var#} at {#var#}.
Register: {#var#} Limited slots. Reply STOP. -{#var#}
🏠 Real Estate
Site Visit Invite:
Hi {#var#}, {#var#} is now open for site visits in {#var#}!
{#var#} BHK from ₹{#var#}. Book a free visit: {#var#}
Reply STOP. -{#var#}
🏋️ Fitness & Wellness
Membership Offer:
Hi {#var#}, join {#var#} gym this {#var#} and get {#var#}% off +
{#var#} months free. Offer till {#var#}. Enroll: {#var#}
Reply STOP. -{#var#}
🏦 BFSI (Banking, Financial Services & Insurance)
Note for BFSI: Financial promotional SMS is tightly regulated. The message must not promise guaranteed returns, must include appropriate disclaimers for investment products, and must comply with SEBI/IRDAI guidelines in addition to TRAI rules. Always review with your legal team before launching.
Loan Offer (General):
Hi {#var#}, you may be eligible for a pre-approved {#var#} loan up
to ₹{#var#} at {#var#}% p.a. Check eligibility: {#var#}
T&C apply. Reply STOP. -{#var#}
12. Metrics That Actually Matter
Most platforms show you delivery rate. That's table stakes. Here's the full measurement stack for promotional bulk SMS campaigns.
Metric | What it measures | Benchmark (India, 2026) |
Delivery Rate | % of messages reaching the handset | 94–98% (non-DND, clean list) |
DND Block Rate | % of list on DND | 15–35% (varies by industry list) |
Opt-out Rate | % replying STOP per campaign | < 0.5% = healthy; > 2% = review copy/frequency |
Click-through Rate | % clicking included URL | 8–18% (personalised); 2–5% (generic) |
Conversion Rate | % completing target action (purchase, signup) | 1–5% (varies hugely by offer quality) |
Cost per Conversion | Total campaign spend ÷ conversions | Track per campaign; optimise over time |
Revenue per SMS | Revenue attributed ÷ messages sent | ₹2–₹15+ for well-targeted retail campaigns |
Attribution for Promotional SMS
The cleanest attribution methods for promotional SMS in India:
Unique URL per campaign (UTM-tagged): yourstore.com/sale?utm_source=sms&utm_campaign=diwali26
SMS-exclusive coupon codes: Code SMSDIWALI that can only be used by SMS recipients
Call tracking numbers: A dedicated phone number in the SMS for campaigns that drive calls
Promo-specific landing pages: A standalone page with no other traffic sources
13. Promotional SMS vs WhatsApp vs Email — Honest Comparison
As a CPaaS platform that also offers WhatsApp Business API, TechTo Networks has a commercial interest in all three channels. Here's an honest comparison anyway.
When to choose Promotional Bulk SMS
✅ You need guaranteed reach on non-smartphone or low-data devices ✅ Your audience is in Tier-2 or Tier-3 India where data is inconsistent ✅ Your campaign is time-sensitive (flash sale, today-only offer) ✅ You have a clean, opted-in list of non-DND numbers ✅ Your message fits in 160 characters with a clear single CTA ✅ Cost efficiency is the primary constraint
When to choose WhatsApp Broadcast
✅ Your audience is already WhatsApp users (urban, 25–45 demographic) ✅ You have rich media to share (product images, videos, catalogues) ✅ You need two-way conversation capability (order queries, support) ✅ You have Meta-approved message templates and a WhatsApp Business Account
When to choose Email
✅ Your message requires more than 160 characters (detailed product info, newsletters) ✅ You have an existing email subscriber list with strong engagement ✅ Your audience is desktop/professional (B2B) rather than mobile-first
The Omnichannel Approach
The highest-ROI campaigns TechTo Networks has seen from Indian businesses use SMS as the first touch (broad reach, immediate delivery) followed by WhatsApp for engaged recipients who clicked the SMS link. This sequence captures the speed advantage of SMS and the richness advantage of WhatsApp — from a single platform and API key.
14. Promotional Bulk SMS Platform Comparison India (2026)
Feature | TechTo Networks | MSG91 | Fast2SMS | SpringEdge | SMSCountry | Kaleyra |
DLT Assisted Setup | ✅ Free | Paid | ❌ Self-serve | Partial | ✅ Guided | Paid |
Promotional Delivery Rate | 99%+ | 99%+ | ~97% | 99%+ | 99%+ | 99%+ |
DND Auto-Scrubbing | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
Regional Language / Unicode | 21 languages | ~10 | Hindi only | ~5 | ~8 | ~10 |
Promotional Rate (2L+/mo) | ₹0.15 | ₹0.18 | ₹0.12 | ₹0.16 | ₹0.17 | ₹0.20 |
Campaign Scheduler | ✅ | ✅ | Limited | ✅ | ✅ | ✅ |
A/B Testing | ✅ | ✅ | ❌ | Partial | ✅ | ✅ |
Operator-Level DLR | ✅ | ✅ | Gateway only | ✅ | ✅ | ✅ |
WhatsApp API (same platform) | ✅ Native | ✅ | ❌ | ❌ | ❌ | ✅ |
RCS Messaging | ✅ Native | Partial | ❌ | ❌ | ❌ | Partial |
Free Trial Credits | ✅ | Limited | ✅ | ✅ | ✅ | ❌ |
Reseller Panel | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ |
India-Based Support | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
Note: Fast2SMS offers the lowest headline price (₹0.12/SMS) but gateway-level DLRs only, no A/B testing, and limited regional language support. For pure price-on-volume campaigns where delivery visibility isn't critical, it's worth evaluating. For campaigns where you need accurate delivery measurement, opt-out tracking, and multi-language support, the ₹0.03–₹0.06/SMS premium on better-featured platforms pays for itself in campaign ROI.
15. Frequently Asked Questions
What is promotional bulk SMS?
Promotional bulk SMS is the practice of sending marketing messages — offers, discounts, event invitations, product launches — in large volumes to thousands of mobile numbers simultaneously. In India, TRAI regulates it strictly: promotional SMS can only reach non-DND numbers, can only be sent between 10 AM and 9 PM IST, and every message must use a DLT-approved promotional template with a registered -P sender header.
What is the difference between promotional and transactional SMS in India? Promotional SMS is used for marketing and cannot reach DND-registered numbers. Transactional SMS is triggered by the user's own actions (OTPs, order confirmations, bank alerts), bypasses DND, and can be sent 24×7. They use different DLT template categories, different sender header suffixes (-P for promotional, -T for transactional), and typically different API endpoints.
Can I send promotional SMS to DND numbers in India?
No — unless the subscriber has given explicit digital consent through the TRAI Digital Consent Acquisition (DCA) process. Without DCA consent, promotional SMS to DND numbers is silently blocked. TechTo Networks offers DCA consent collection for enterprise customers who want to reach DND users who have opted into their own platform.
What are the TRAI rules for promotional SMS timing in India?
Promotional SMS can only be sent between 10 AM and 9 PM IST. Messages dispatched or scheduled outside this window are dropped by the operator — not queued and delivered later. TechTo Networks automatically enforces this window and alerts you if you try to schedule outside it.
What is a promotional sender header and how do I register one?
A promotional sender header is a 6-character alphanumeric brand identifier that appears as the sender name in your SMS (e.g., VM-MYSHOP-P). Since May 2025, promotional headers must end in -P. Registration requires prior entity (PE) registration on a DLT portal and costs approximately ₹500 + GST per header per year. TechTo Networks handles header registration for you on all paid plans.
How much does promotional bulk SMS cost in India in 2026?
Promotional SMS pricing ranges from ₹0.12 to ₹0.22/SMS depending on volume and provider. At 2 lakh+ messages/month, TechTo Networks offers ₹0.15/SMS all-inclusive (no hidden DLT or template fees). Your effective cost per conversion depends far more on list quality and message quality than on the headline per-SMS rate.
What is DLT registration and is it required for promotional SMS?
Yes, unconditionally. DLT (Distributed Ledger Technology) registration is TRAI-mandated for all commercial SMS in India since September 2021. For promotional SMS specifically, you must register your business entity, your promotional sender header (with -P suffix), and every message template. Unregistered or non-compliant messages are silently blocked. TechTo Networks provides free DLT registration assistance to all paid plan customers.
How many promotional SMS can I send per day?
There is no official per-day cap set by TRAI, but individual DLT templates have a volume threshold. More practically, your marketing strategy should cap frequency at 2–4 messages per week per contact to keep opt-out rates below 0.5%. Exceeding this threshold significantly increases unsubscribes and can trigger operator-level spam flags.
Can I send promotional SMS in Hindi or other Indian languages?
Yes. TechTo Networks supports 21 Indian languages via Unicode SMS. Unicode messages are limited to 70 characters per SMS part (vs. 160 for ASCII). You'll need a separate DLT template for each language variant. Regional language promotional SMS consistently delivers 25–40% higher click-through in Tier-2 and Tier-3 cities compared to English versions for the same offer.
What happens if someone replies STOP to my promotional SMS?
Their number is added to your opt-out list and TechTo Networks automatically suppresses them from all future promotional sends. The opt-out is also recorded in the DLT Consent Register as per TRAI rules. Attempting to send promotional SMS to a number that has opted out is a TRAI violation. TechTo's dashboard shows your opt-out list and allows export for cross-channel suppression (email, WhatsApp).
Launch Your Promotional Bulk SMS Campaign Today
TechTo Networks is India's only single-platform solution for Promotional SMS, Transactional SMS, WhatsApp Business API, and RCS — all under one dashboard, one API key, and one DLT setup.
✅ Free DLT registration — entity, header, and template
✅ Auto DND scrubbing before every campaign
✅ 10 AM – 9 PM delivery window enforced automatically
✅ 21 Indian languages including Hindi, Tamil, Telugu, Kannada
✅ Real-time operator-level delivery reports
✅ Campaign scheduler, A/B testing, contact segmentation
✅ Free trial credits on signup — no credit card required
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