Wish to send bulk WhatsApp messages to your customers officially without getting your number blocked?
You're at the right place!
If you use WhatsApp Business app, you can only send broadcasts to 256 users in one go. Also, these users will only receive the message if they have saved your contact!
So, what's the solution?
You can send bulk WhatsApp messages to hundreds and thousands of users in one go via WhatsApp Business API!
And the messages will deliver even if the user hasn't saved your number in their contacts.
And in this blog, we'll guide you on how you can send bulk messages on WhatsApp using an official WhatsApp bulk message sender, AiSensy!
So, let's get started!
What is a bulk WhatsApp sender?
Why can't you send bulk WhatsApp messages via WhatsApp Business app?
The solution - WhatsApp Business API
Requirements to get started
How to send bulk WhatsApp messages
AiSensy features - Your Official Bulk WhatsApp sender tool
Can you send bulk WhatsApp messages for FREE
Best practices to avoid getting your WhatsApp number blocked
What is a bulk WhatsApp sender?
A bulk WhatsApp sender is a tool that allows businesses to send bulk WhatsApp messages to hundreds and thousands of users in one go where the messages get delivered to a user's personal chat, just like a direct WhatsApp message.
There are 2 types of bulk WhatsApp sender tools:
- Unofficial Bulk senders - These are third-party software that charge you very little for sending bulk broadcasts but violate WhatsApp policies and gets your number banned (permanently)
- Official Bulk Senders (via WhatsApp API) – Platforms like AiSensy that let you send bulk messages on WhatsApp legally without any risk.
If you’re serious about scaling your business on WhatsApp, always choose an official bulk sender like AiSensy.
Why can't you send bulk WhatsApp messages via WhatsApp Business account?
The first thing you should is that WhatsApp Business app is not bad!
Especially, if you are just a solopreneur with 200-500 business contacts whom you wish to connect on WhatsApp.
However, if you have bulk contacts in thousands or lakhs that you want to engage on WhatsApp, WhatsApp Business app just won't cut it!
There are multiple restrictions when you use WhatsApp Business app for broadcasting including:
- 256 unique users broadcast limit everyday: You can only send messages to 256 unique users in a day using WhatsApp Business app.
- Limited message delivery: Only users who have saved your number in their contact list will be eligible to receive your broadcast via WhatsApp Business app.
- Lacks automation & Chatbot integration: When you use WhatsApp for bulk broadcasting, you will receive hundreds of queries and WhatsApp Business app is not equipped for you to handle hundreds of chats seamlessly. Neither does it offer a Chatbot integration for you to automate these queries. Leading to delayed replies and reduced customer satisfaction.
Read: In depth comparison: WhatsApp Business app Vs WhatsApp Business API
In case you think trusting an unofficial bulk WhatsApp sender is solution, you might just get your number blocked on your very first broadcast.
This is because of WhatsApp's spam detection algorithms that detect the use of such spam software and block your number instantly.
So, what's the official way to engage customers on WhatsApp with bulk WhatsApp messages?
The Solution - WhatsApp Business API
WhatsApp Business API is like a supercharged version of WhatsApp, launched by WhatsApp in 2018, helping businesses to engage with customers at scale on WhatsApp, officially, without getting their numbers blocked!
Whether you want to send messages to lakhs of users in one go or want to build a WhatsApp chatbot or automate notifications, all of this is possible via WhatsApp Business API.
However, WhatsApp API is not a platform, it's just an API!
There are multiple platforms built on top of official WhatsApp Business API that you can use to drive the power of WhatsApp API for your business.
And here, we'll show you how to send bulk messages on WhatsApp using a platform built on the official WhatsApp API - AiSensy.
Read: WhatsApp Business API: Complete guide
Requirements to get started with sending WhatsApp bulk messages
You need:
- Fresh phone number inactive on WhatsApp: We recommend using a fresh phone number which has never been used on WhatsApp. You can also use your existing WhatsApp number to apply for WhatsApp API. However, you need to delete your WhatsApp/ WhatsApp business account to use the same number to apply for the WhatsApp API.
- Facebook Business manager account with admin access
If you have these 2 things ready, you can go ahead with sending bulk WhatsApp broadcasts using AiSensy.
How to send bulk WhatsApp messages on WhatsApp officially?
It's really easy to get started with bulk WhatsApp broadcasting using AiSensy.
Follow these steps to send your first bulk WhatsApp broadcast:
1. Signup on AiSensy
Go to app.aisensy.com/signup and fill in the below details to get started.
After completing the signup, you will gain access to the Forever free plan where you can apply for WhatsApp Business API and run Click to WhatsApp ads.
Read: What is AiSensy's Forever FREE Plan
2. Apply & get WhatsApp Business API in 10 minutes
To send bulk WhatsApp broadcast, it's important to apply for WhatsApp Business API.
You can apply for the API and get approved in just 10 minutes.
Read: How to apply for FREE WhatsApp Business API
3. Verify your KYC
Once your WhatsApp API goes live, you unlock a broadcasting limit of 250 unique users per day.
To increase this limit to 1000 unique users per day you need to get your KYC done.
However, don't worry. To increase this limit further, just send messages to half of your current broadcast limit in a 7 day-period.
That means if your broadcast limit is 1000 users per day, just send messages to 500 unique users and your broadcast limit will increase to 10,000 unique users per day.
Read: How to get KYC done and increase WhatsApp Broadcast limit
4. Start your FREE Trial or purchase a plan
There are limited features available in the FREE forever plan. If you wish to send a WhatsApp broadcast, you can either start your 14-day FREE trial where you will get all Pro plan features worth Rs 2399 free for 14 days or you can purchase a paid plan!
5. Create a WhatsApp Template message
Once all the above steps are followed, now you need to create a WhatsApp template message, the message that you will be sending to your users on WhatsApp.
You can create multiple types of messages such as text, image, video, copiable coupon code and carousel card messages.
There's a particular process to creating a template message that you can read here:
Read: How to create WhatsApp Template message in AiSensy
6. Upload Contacts in .csv format
After creating the template message, you need to upload your contacts.
You first need to add the contacts to a google sheet and download it in .csv format.
To segment your audience, filter them via tags and attributes.
Read: How to upload contacts in .csv format
7. Recharge WhatsApp Conversation Credits
WhatsApp charges separately for conversations you send on WhatsApp. Depending on the type of conversation, you will be charged differently.
Let's say you want to send marketing messages to your audience of 1000 users.
This will cost you Rs 0.88/ conversation.
However, if you're sending utility or authentication messages, they'll cost you Rs 0.125/ conversation.
Read: What are WhatsApp conversations and how are they charged
8. Filter and select contacts you wish to send a broadcast
Once you have imported your contacts, you can filter them by selecting who you want to send a WhatsApp Broadcast.
Click the Filter button to filter the contacts you wish to Broadcast.
9. Fill in your campaign details and select the approved template message
Here, add your Campaign name (Campaign name should be unique for every campaign) & select your pre-approved template message.
Read: How to send bulk WhatsApp messages in AiSensy: In detail
10. Send your bulk WhatsApp broadcast
11. Tap Campaign Analytics to monitor insights
And well, that's it! You've just sent your very first bulk WhatsApp broadcast officially using AiSensy.
On average, businesses using AiSensy drive 25-60% of their revenue via Broadcasting and many more features.
AiSensy features - Your Official WhatsApp bulk message sender
With AiSensy, sending bulk WhatsApp messages is just the beginning. You can also:
- Apply for Verified Blue tick for free: Get your business recognized by applying for free WhatsApp blue tick.
- Automate notifications via Integrations: Connect your CRM & software and automate useful notifications on WhatsApp such as order confirmation, delivery updates, webinar confirmation and much more.
- Build no-code Chatbots: Automate support queries, sales and lead qualification with no-code drag and drop chatbots that you can build in 10 minutes.
- Showcase catalogs and collect payments within WhatsApp: Connect your facebook catalogs with AiSensy and allow users to pay directly within WhatsApp via native WhatsApp payments.
- Multi-agent live chat: Add unlimited team members and resolve customer queries in real-time with multi-agent live chat.
- Advanced retargeting: Retarget users based on who read, replied and clicked the CTA button in your template messages.
- Run ads that Click to WhatsApp: Acquire 5x leads by running ads that click to WhatsApp powered by AiSensy. Engage leads by connecting chatbot, qualifying users & so much more!
Can you send bulk WhatsApp messages for FREE?
Unfortunately, no! If you want to connect with customers at scale using official WhatsApp Business API, you need to pay for conversation credits as well as platform charges to access the WhatsApp API!
Best practices to avoid getting your WhatsApp number blocked
When sending bulk WhatsApp messages, the last thing you want is to get your number blocked! WhatsApp has strict policies to prevent spam, and violating them could lead to your number getting permanently banned.
Here are some best practices to ensure safe and effective bulk WhatsApp messaging without risking your WhatsApp number:
1. Build a Quality Contact List
- Only send messages to users who have opted in to receive them.
- Avoid using scraped or purchased contact lists—this is a direct violation of WhatsApp’s policies.
2. Maintain a High Engagement Rate
- WhatsApp tracks read rates, replies, and blocks to assess the quality of your messages.
- The more people read & reply, the better your quality rating stays!
3. Avoid Sending Too Many Messages at Once
- Start slow! Send messages in batches and gradually increase volume.
- If you send too many messages to the same audience, they might get irritated and block your contact causing WhatsApp to flag your WhatsApp API account.
4. Segment Your Audience for Targeted Messaging
- Instead of blasting everyone, send personalized messages based on user interest.
- AiSensy lets you filter users based on past engagement, making your messages more relevant.
5. Engage in Two-Way Conversations
- Don’t just send messages—encourage replies!
- A high reply rate signals to WhatsApp that your messages aren’t spam.
6. Monitor Your Quality Rating in AiSensy
- AiSensy shows you WhatsApp’s quality rating for your number.
- If your rating drops, pause bulk messaging and focus on engaging with existing customers.
WhatsApp Bulk messaging FAQs
Bulk broadcast messaging on WhatsApp lets businesses send the same message to thousands of users at once. Unlike WhatsApp groups, recipients don’t see each other, and the message lands in their personal chat—just like a direct message. With WhatsApp Business API, you can send these messages officially, ensuring a seamless and professional customer outreach.
WhatsApp charges per conversation, depending on the type (Marketing costs ₹0.88, Utility costs ₹0.125 & Authentication costs ₹0.125 per conversation). Each conversation is charged for a rolling cycle of 24 hours during which you can send unlimited messages of the same conversation to the user.
Absolutely! In 2025, WhatsApp Business API remains the official and safest way to send bulk broadcast messages. However, you cannot use unofficial third-party tools, as WhatsApp actively blocks numbers that violate its policies. With platforms like AiSensy, you can send bulk messages to thousands of users without worrying about bans or restrictions./p>
To send bulk messages via WhatsApp Business API, you’ll need an approved WhatsApp Business API account that you can apply via AiSensy, pre-approved message templates, WhatsApp Conversation Credits to send these messages and a list of opted-in contacts./p>
Yes! You can add personalization by including a user’s name, order Details ("Your order #1234 is out for delivery!") & much more. With AiSensy, dynamic variables allow you to send customized messages at scale—without manually editing each one!
Initially, you can send messages to 1000 unique users per day after getting your KYC done. This can increase to unlimited users per day when you send broadcasts to half of your current broadcasting limit in 7 days. If your broadcast limit is 1000 users per day, you can increase it to 10,000 by sending messages to 500 users in 7 days.
Here are some golden rules to keep your messages spam-free: ✅ Get User Consent – Only message users who have opted in. ✅ Send Value-Driven Content – Don't just send random promotional messages on WhatsApp; focus on useful, engaging messages. ✅ Use WhatsApp-Approved Templates – Ensure all messages follow WhatsApp's guidelines. ✅ Encourage Replies – A two-way conversation improves engagement and lowers spam risks. ✅ Monitor Your Quality Rating – WhatsApp tracks message performance; AiSensy helps you track you quality rating directly from it's dashboard.
100%! With AiSensy, you can track message Delivery Rates, read rates, engagement & reply rates and monitor number of link clicks in your messages.
While WhatsApp Business API removes most limitations, there are still a few things to keep in mind: ⚠ Tier based broadcasting limits – You start with 1,000 unique users per day, but this can increase to unlimited users per day automatically when you engage with half the users in your current broadcast limit within 7 days. ⚠ Only Approved Templates can be sent. ⚠ User Opt-in is a Must – Sending messages to users without consent can get your account restricted.
No. Sending bulk messages using official WhatsApp API requires WhatsApp Conversation Credits, which are charged per message.
If too many users report or block your messages, your quality rating drops, and WhatsApp may limit or ban your account.
WhatsApp Business App is Good for small businesses, limited to 256 users per broadcast while WhatsApp API is built for scale, allows sending bulk WhatsApp messages without restrictions.
Yes—but only if you use an official WhatsApp API provider like AiSensy. Using third-party unofficial software can get your number blocked permanently. That's why you should always stay compliant & use WhatsApp-approved platforms!
Yes! With AiSensy, you can set up automated broadcasts, chatbots, and notifications to streamline messaging.
