Sending bulk messages on WhatsApp is one of the most effective ways for businesses to reach customers instantly. With open rates touching 98%, WhatsApp clearly outperforms email and SMS for promotions, reminders, and updates.
However, many businesses still ask the same question:
How do you send bulk messages on WhatsApp without getting blocked or violating WhatsApp policies?
This guide answers that completely — covering methods, tools, legality, comparisons, and best practices, all in one place.
What Is WhatsApp Bulk Messaging?
WhatsApp bulk messaging means sending a single message to multiple recipients at once. Businesses commonly use it for:
- Promotional campaigns
- Order & delivery updates
- Appointment reminders
- Event announcements
- Customer re-engagement
But not every method of bulk messaging is approved by WhatsApp.
Is Sending Bulk Messages on WhatsApp Legal?
Yes — when done the right way.
No — when done incorrectly.
WhatsApp allows bulk messaging only through official and compliant methods, primarily via the WhatsApp Business API.
Allowed by WhatsApp
- WhatsApp Business API
- Approved API providers
- User opt-in–based messaging
- Pre-approved message templates
Not Allowed
- Spamming unknown numbers
- Using cracked or unofficial tools
- Sending messages without consent
Different Ways to Send Bulk Messages on WhatsApp
1. WhatsApp Broadcast (Limited Option)
WhatsApp Business App allows broadcast lists.
Limitations
- Max 256 contacts per list
- Contacts must save your number
- No automation or analytics
Best for: Very small or local businesses
2. Bulk Sender Software (High Risk)
Tools like WA Sender automate messages using unofficial methods.
Pros
- Easy setup
- No API approval needed
Cons
- High risk of number ban
- Not WhatsApp-compliant
- No long-term scalability
⚠️ Not recommended for serious businesses
3. WhatsApp Business API (Best & Official Method)
The WhatsApp Business API is the safest and most scalable way to send bulk messages.
It allows you to:
- Send messages to thousands of users
- Automate workflows and chatbots
- Use CRM integrations
- Track delivery, read, and response rates
- Stay fully compliant with WhatsApp policies
How to Send Bulk Messages Using WhatsApp Business API (Step-by-Step)
Step 1: Choose a WhatsApp API Provider
Instead of applying directly to Meta, most businesses use official providers such as Whinta, WATI, AiSensy, Karix, Engati, Twilio, or Botkida.
Step 2: Collect User Opt-Ins
Opt-ins are mandatory. You can collect them via:
- Website forms
- WhatsApp chat prompts
- Checkout pages
- QR codes
- Offline consent
Step 3: Create Message Templates
Bulk messages are sent using pre-approved templates, such as:
- Order confirmations
- Shipping alerts
- Promotional offers
- Appointment reminders
Step 4: Send & Automate Bulk Messages
Once templates are approved, you can:
- Upload contacts
- Schedule campaigns
- Trigger automated messages
- Analyze performance metrics
WhatsApp Broadcast vs Bulk Messaging (API)
| Feature | Broadcast | Bulk via API |
|---|---|---|
| Contact Limit | 256 | Unlimited |
| Automation | ❌ | ✅ |
| Analytics | ❌ | ✅ |
| Policy Safe | ⚠️ | ✅ |
| Scalability | ❌ | ✅ |
List of Top WhatsApp API Providers
Whinta
Whinta is a WhatsApp Business API platform built for small and mid-sized businesses looking to scale customer communication efficiently.
It supports bulk messaging, automated workflows, CRM integration, and template management through an easy-to-use dashboard.
Whinta is well-suited for businesses that want fast onboarding, compliance with WhatsApp policies, and marketing-ready automation for promotions, notifications, and customer support.
WA Sender
WA Sender is a desktop-based bulk messaging tool that allows users to send messages without using the WhatsApp Business API.
While it may appear convenient for short-term use, it operates outside WhatsApp’s official guidelines. This increases the risk of number bans and account restrictions. WA Sender is generally not recommended for brands seeking long-term, compliant WhatsApp marketing solutions.
Botkida
Botkida focuses on automation-first WhatsApp solutions, combining chatbots with bulk messaging capabilities.
It is suitable for businesses that rely heavily on conversational flows, automated responses, and lead qualification. Botkida supports WhatsApp Business API compliance and is often used by brands looking to reduce manual effort through intelligent automation.
Karix
Karix is an enterprise-grade communication platform offering WhatsApp Business API solutions at scale.
It is commonly used by large organizations that require high-volume messaging, deep CRM integrations, and robust security standards. Karix supports complex use cases such as transactional alerts, customer journeys, and omnichannel communication across WhatsApp and other platforms.
Engati
Engati provides WhatsApp Business API access with a strong focus on AI chatbots and automation. Businesses can build conversational workflows, automate FAQs, and manage bulk messaging campaigns from a single platform.
Engati is ideal for companies that want to combine customer support, sales automation, and marketing broadcasts through WhatsApp.
WATI
WATI is a popular WhatsApp API solution designed mainly for sales and support teams. It allows businesses to send bulk messages, manage conversations, and automate follow-ups efficiently.
WATI integrates well with CRMs and is widely used by D2C brands, service businesses, and startups looking for structured WhatsApp communication at scale.
Twilio
Twilio offers WhatsApp Business API access as part of its broader communication infrastructure. It is best suited for developers and enterprises that need high flexibility, global reach, and custom integrations.
While powerful, Twilio requires technical expertise and is often chosen by teams building complex messaging systems rather than plug-and-play marketing tools.
AiSensy
AiSensy is an India-focused WhatsApp Business API platform widely used by D2C brands and marketers.
It offers bulk messaging, campaign automation, chatbot flows, and easy template approvals. AiSensy is known for faster onboarding, localized support, and features tailored for promotional and transactional WhatsApp campaigns.
WhatsApp API Providers Comparison Table (With Pricing Signals)
⚠️ Pricing varies by usage, country, and message volume. Values below are indicative to support decision-making and search intent.
| Provider | Best For | Setup Cost | Monthly Platform Fee | WhatsApp Message Cost | Ease of Use |
|---|---|---|---|---|---|
| Whinta | SMBs & growing brands | Low / Free* | ₹1,000–₹3,000 | As per WhatsApp rates | ⭐⭐⭐⭐☆ |
| WA Sender | Short-term testing | Free / One-time | None | No official pricing | ⭐⭐⭐☆☆ |
| Botkida | Automation-heavy workflows | Medium | ₹2,000–₹5,000 | As per WhatsApp rates | ⭐⭐⭐⭐☆ |
| Karix | Enterprises | High | Custom pricing | As per WhatsApp rates | ⭐⭐⭐☆☆ |
| Engati | Chatbots + automation | Medium | ₹2,500–₹6,000 | As per WhatsApp rates | ⭐⭐⭐⭐☆ |
| WATI | Sales & support teams | Low–Medium | ₹2,000–₹5,000 | As per WhatsApp rates | ⭐⭐⭐⭐☆ |
| Twilio | Developers & global scale | Medium–High | Pay-as-you-go | Slightly higher than local BSPs | ⭐⭐⭐☆☆ |
| AiSensy | D2C & Indian marketers | Low / Free* | ₹1,000–₹4,000 | As per WhatsApp rates | ⭐⭐⭐⭐⭐ |
*Setup fees may vary based on onboarding offers and business verification requirements.
Common Mistakes That Get WhatsApp Numbers Blocked
- Sending messages without user consent
- Using unofficial bulk sender tools
- Over-sending promotional content
- Ignoring WhatsApp template rules
Which Option Should You Choose?
- Small businesses: WhatsApp Broadcast
- Growing brands: Whinta or AiSensy
- Automation-heavy use cases: Engati or Botkida
- Enterprises: Karix or Twilio
- Short-term testing: WA Sender (not recommended)
Final Takeaway
If you’re serious about learning how to send bulk messages on WhatsApp, the safest and most future-proof answer is:
Use WhatsApp Business API through an official provider.
It protects your brand, improves delivery rates, and aligns perfectly with WhatsApp’s evolving policies — making it ideal for long-term growth.
Can I send bulk messages on WhatsApp for free?
You can send limited bulk messages for free using the WhatsApp Business App broadcast feature, but it is restricted to 256 contacts per list, requires contacts to save your number, and offers no automation. For large-scale or professional use, the WhatsApp Business API is required, which involves messaging and platform costs.
Is WhatsApp bulk messaging allowed by WhatsApp?
Yes, WhatsApp bulk messaging is allowed only through the WhatsApp Business API and only to users who have opted in. Sending bulk messages using unofficial tools or without user consent violates WhatsApp policies and can result in permanent number bans.
What is the safest way to send bulk WhatsApp messages?
The safest method is using the WhatsApp Business API via an official provider such as Whinta, WATI, AiSensy, Karix, Engati, or Twilio. This ensures compliance, better delivery rates, analytics, and long-term account safety.
What is the difference between WhatsApp broadcast and bulk messaging?
WhatsApp broadcast is a manual feature with limited reach and no automation, while bulk messaging via the WhatsApp Business API allows unlimited contacts, automation, analytics, and compliance, making it suitable for growing and enterprise businesses.
How much does WhatsApp bulk messaging cost?
WhatsApp bulk messaging costs depend on:
WhatsApp conversation charges (per message/session)
Platform or software fees
Country-specific rates
Prices usually range from ₹0.30–₹0.80 per conversation in India, plus monthly platform fees depending on the provider.
Do I need WhatsApp template approval for bulk messages?
Yes. All bulk messages sent via the WhatsApp Business API must use pre-approved message templates, especially for promotional and notification messages. Transactional replies within a 24-hour user window do not require templates.
Can I send promotional messages using WhatsApp API?
Yes, promotional messages are allowed only to opted-in users and must be sent using approved marketing templates. Overuse or irrelevant promotions may reduce delivery quality or trigger account reviews.
Which WhatsApp API provider is best for small businesses?
For small and mid-sized businesses, platforms like Whinta and AiSensy are popular due to faster onboarding, easier dashboards, and affordable pricing compared to enterprise-focused providers