Promotional SMS Service in India for Business Growth
How to use a promotional SMS service in India to grow sales — rules, sending hours, message ideas, writing tips and how to measure campaign results.
Bulk SMS India Team Updated 5 June 2025 4 min read 
A well-timed promotional SMS still drives walk-ins, clicks and sales better than most digital channels. It reaches customers on any phone, gets read within minutes and costs a few paise. A promotional SMS service gives your business a direct line to customers for offers, launches and events.
This guide covers how promotional SMS works in India, the rules you must follow and how to write campaigns that convert.
What counts as promotional SMS?
Any message whose purpose is to sell or promote: discounts, sales, new arrivals, property launches, admission campaigns, event invitations, loyalty points reminders with an offer, and similar.
Rules for promotional SMS in India
| Rule | What it means for you |
|---|---|
| Sending hours | Delivered only between 10 AM and 9 PM |
| DND | Not delivered to numbers that have blocked promotions, unless they gave consent |
| Sender ID | Numeric header; shows a -P suffix to customers |
| DLT | Every message must match an approved promotional template |
| Opt-out | Give customers a simple way to stop messages |
| Links | URLs in the message must be whitelisted in your DLT template |
These rules protect customers from spam, and following them protects your brand from complaints and blocks.
Promotional SMS ideas that work
- Festive sales: Diwali, Holi, Eid, Christmas and regional festivals.
- Flash sales: "Today only, 4 PM to 8 PM."
- New arrivals: a short line and a link to the collection.
- Abandoned-interest reminders: "Still thinking about it? Prices go up Sunday."
- Birthday offers: a personal discount code.
- Store openings and events: address, date and a map link.
- Property launches: price range, location and site-visit booking.
- Admission campaigns: course name, last date and an enquiry number.
What your customer sees
- DLT-approved sender ID and template
- Submitted to operators in real time
- Live delivery report for every number
- Works on every mobile phone
How to write a promotional SMS that converts
Lead with the offer. Put the benefit in the first few words: "Flat 30% off" beats "Dear customer, we are pleased to announce".
Keep it to one SMS. A standard SMS holds 160 characters. Longer messages split into parts and cost more.
Add one clear action. One link or one number. Use a short, whitelisted link.
Create urgency honestly. A real deadline ("till Sunday") lifts response.
Sign off with your brand. Customers act when they recognise the sender.
Personalise. Adding the customer's name or city through template variables noticeably improves response.
Example: Flat 30% off on festive kurtas, today till 9 PM only! Shop: {#var#} – StyleZ. Reply STOP to opt out.
Best time to send promotional SMS
Within the allowed 10 AM – 9 PM window, results vary by audience:
- 11 AM – 1 PM: good for office-goers on a break.
- 5 PM – 8 PM: strongest for retail, food and entertainment.
- Weekends: good for property, automobiles and leisure.
Test two time slots with small batches before sending to your full list.
Measuring results
A promotional SMS service should show you more than "sent". Track:
- Delivery rate from live delivery reports.
- Clicks using a trackable short link.
- Redemptions using a unique coupon code per campaign.
- Revenue per 1,000 SMS, which tells you if the campaign paid off.
Combine SMS with other channels
Promotional SMS works even better alongside richer channels. Send a short SMS to everyone, then follow up on WhatsApp or RCS with images and buttons for customers who prefer them. Bulk SMS India lets you run all of them from one panel, so one campaign can reach every customer the way they like.
Explore our promotional SMS service and SMS pricing.
Frequently asked questions
Can I send promotional SMS to all my customers?
You can send to customers who have not blocked promotional messages on DND. Customers who registered on DND need to give you consent first.
Why was my promotional SMS not delivered at 9:30 PM?
Promotional messages are delivered only between 10 AM and 9 PM. Messages outside that window are dropped, so schedule campaigns inside it.
Can I include a link in a promotional SMS?
Yes, as long as the link is whitelisted in your DLT template. Non-whitelisted links are blocked by operators.
Ready to get started?
Talk to our team about bulk SMS service — setup help, DLT guidance and test credits.
Messaging specialists with 10+ years of experience (since 2016) helping 15,000+ Indian businesses with bulk SMS, WhatsApp, RCS and voice communication.
