In this article 7 sections
To send bulk WhatsApp messages in India, format every number as 91 plus the 10-digit mobile number, write in the language your customers read, and message only people who gave you their number. API platforms charge about ₹0.86 per marketing message plus a plan; LeadTrapper sends from your own number for $50 a year with no message fees.
- Indian mobile numbers are 10 digits; for WhatsApp, write them as 91 followed by those 10 digits, with no 0 or +91 spaces.
- On the official API, sources in 2026 put Meta's India marketing rate at about ₹0.86 per delivered message, plus the provider's plan, markup and 18% GST.
- A desktop sender such as LeadTrapper is a flat $50 a year with no per-message fees, but it uses your regular number, so send carefully.
- India's Digital Personal Data Protection Rules bring most business duties into force on 13 May 2027, including clear notice and consent.
- Never ask customers for a UPI PIN, OTP or card number on WhatsApp; scammers copy business messages, so say you never will.
WhatsApp is how Indian customers talk to the shops, clinics and coaching centres they use. That makes it the obvious channel for offers and updates, and it’s why “WhatsApp bulk sender India” is searched so often. This guide covers the details that matter in India: number formats from Excel, Hindi and English messages, festival timing, what the official API costs in rupees, and the rules to follow.
Format Indian Numbers Correctly
Indian mobile numbers have 10 digits. For WhatsApp, every number needs the country code 91 in front, with nothing else:
| In your sheet | For WhatsApp |
|---|---|
| 98765 43210 | 919876543210 |
| 098765 43210 | 919876543210 |
| +91-98765-43210 | 919876543210 |
| 9.19877E+11 | Excel has hidden the number: format the column as Text and paste again |
The free WhatsApp number formatter fixes a whole column at once, and the guide to the WhatsApp number format explains why. In LeadTrapper, Check Numbers adds 91 to local numbers when you choose India, and removes numbers that aren’t on WhatsApp before you send.
Write in Your Customers' Language
A message in the customer’s own language gets read. WhatsApp shows Hindi and other Indian scripts normally, and LeadTrapper fills codes such as {{name}} and {{city}} inside them. Many businesses write Hindi first and English second, so the whole family can read it:
नमस्ते {{name}}, {{city}} में हमारी दिवाली सेल शुरू हो गई है! सभी ऑर्डर पर 15% छूट, 5 नवंबर तक। ऑर्डर करने के लिए YES लिखें। Hi {{name}}, our Diwali sale in {{city}} has started: 15% off every order until 5 Nov. Reply YES to order.नमस्ते {{name}}, आपका ऑर्डर तैयार है। दुकान पर आकर ले जाएँ या डिलीवरी के लिए DELIVER लिखें। Hi {{name}}, your order is ready. Collect it from the shop or reply DELIVER.
Send your first Hindi campaign free for 14 days
Write two or three versions of the message so not every customer gets the same words, as the WhatsApp spintax guide explains. Schools sending fee reminders will find Hindi templates in the guide to fee reminder messages to parents. Customers in Pakistan too? The Pakistan bulk sending guide covers Urdu, Roman Urdu and the 92 format.
When to Send in India
- Festivals. Diwali, Holi, Eid, Navratri, Pongal and Onam bring buying intent. Send offers a week or so before, not on the day when everyone is with family.
- Time of day. Late morning and early evening, when people check their phones between work and dinner. Avoid late night; set pause hours so nothing goes out while customers sleep.
- How often. One or two campaigns a month. Customers who get messages every day mute or block the number.
What It Costs in India
| Option | What you pay |
|---|---|
| Official API platform | A monthly plan plus Meta’s fee per marketing message: about ₹0.86 per delivered message in 2026 sources, plus markup and 18% GST |
| LeadTrapper (desktop sender) | $50 a year, no per-message fees |
| WhatsApp Business app | Free; broadcast lists of up to 256 people who saved your number |
For 2,000 marketing messages a month on the API, Meta’s fees alone come to about ₹20,600 a year before the platform plan and tax. The guide to WhatsApp bulk sender prices compares tools side by side, and the guide to a WATI alternative covers when the API is still worth it.
Rules to Know in India
- Consent. WhatsApp's business messaging policy asks businesses to message only people who gave their number and agreed to be contacted, and to honour every request to stop.
- India's data protection rules. The Digital Personal Data Protection Act, 2023 and its Rules, notified in November 2025, bring most business duties into force on 13 May 2027: clear notice of why you hold someone's number, valid consent, security and the right to withdraw. Start collecting consent properly now.
- DLT is for SMS. TRAI's DLT registration covers commercial SMS and calls on telecom networks. WhatsApp messages don't go through DLT, so WhatsApp's own rules are the ones that apply to them.
- Never ask for a UPI PIN, OTP or card number. WhatsApp's policy forbids asking for card numbers and sensitive identifiers in chats, and payment scams copy business messages. Add a line such as "We will never ask for your UPI PIN or OTP".
This is a summary, not legal advice.
Send Your First Campaign
- Open Check Numbers in LeadTrapper, upload your Excel list and choose India. Local numbers get 91, duplicates and numbers without WhatsApp are removed.
- Press Send messages to these: the clean list moves to Send Bulk Messages with the names from your file.
- Write the message in Hindi, English or both, with codes from your columns.
- Choose the Safe speed and press Start Sending, or Send Later for the morning.
The guide to formatting a phone list and the WhatsApp warm-up schedule cover the two steps that protect a number most: a clean list and a well-used number.
Sources
- Legal 500. DPDP Act and Rules 2025: compliance milestones.
- AiSensy. Pricing, checked 14 November 2026.
- Meta. WhatsApp Business Platform pricing.
- WhatsApp. WhatsApp Business Messaging Policy, updated 23 September 2026.
The WhatsApp bulk sender is part of LeadTrapper for Windows, which costs $50 a year with a 14-day free trial. LeadTrapper is not affiliated with or endorsed by WhatsApp.
Before you send: warm up new or quiet numbers first with the WhatsApp warmer (LeadTrapper's Account Warmer), which runs in the same app.
Frequently Asked Questions
For big brands sending order updates to opted-in customers, an official API platform such as AiSensy, Interakt or WATI. For small businesses sending personal campaigns to their own customers, a desktop sender such as LeadTrapper at $50 a year, with no per-message fees.
On the API, Meta charges per marketing message; sources in 2026 put it at about ₹0.86 per delivered message, before the provider's plan, markup and 18% GST, and AiSensy's page listed ₹1.09 on its credits. LeadTrapper is a flat $50 a year with no message fees.
Write 91 followed by the 10-digit mobile number, with no leading 0, spaces or dashes: 98765 43210 becomes 919876543210. In LeadTrapper's Check Numbers, choose India and local numbers get 91 added automatically.
TRAI's DLT system registers senders and templates for commercial SMS and calls on telecom networks; WhatsApp messages don't travel through it. WhatsApp has its own rules: message only people who gave you their number and agreed to hear from you.
Yes. WhatsApp handles Hindi and other Indian scripts, and LeadTrapper fills codes such as {{name}} inside Hindi text. Many businesses send Hindi and English in one message so everyone can read it.
About LeadTrapper
LeadTrapper is a Windows app for finding business leads and contacting them on WhatsApp. It collects business contacts from Google Maps, Instagram, Facebook, TikTok, LinkedIn and business websites, checks which numbers are on WhatsApp with its Number Filter, and sends personalised campaigns with automatic delays from one or more WhatsApp accounts. It also has a chatbot, a shared inbox for every account, and Store Orders for online shops. It installs from the Microsoft Store, and the full app is free for 14 days, then $50 a year. Free web tools, browser extensions and a Wix app are listed on the Free Tools page.
Send Your Diwali Offer to Every Customer
LeadTrapper for Windows sends WhatsApp campaigns in Hindi and English from your own numbers, with no per-message fees. $50/year, 14-day free trial.
