WhatsApp broadcast software: 8 best tools to blast WhatsApp campaigns
Keeping customers informed and engaged is critical for growth, and WhatsApp Business has become a popular channel for bulk messaging, helping companies reach large audiences quickly. However, managing high-volume outreach can be challenging with WhatsApp’s limited features. This is where specialized WhatsApp broadcast software steps in, providing tools to amplify outreach with:
Automation to streamline messaging workflows.
Segmentation to target specific groups effectively.
Analytics to track performance and optimize campaigns.
This article explores the top eight WhatsApp broadcast platforms that streamline bulk messaging and boost customer engagement across every stage of the buyer’s journey, whether for growing brands or established enterprises.
Why do you need a WhatsApp broadcast software?
If you’re running a business, especially in marketing, sales, or customer support, you know how important engaging with your audience at scale is.
Businesses can broadcast messages to contacts via personal WhatsApp and the free WhatsApp Business App, but the free WhatsApp Business app has limitations.
You need to add contacts manually, and can’t send messages to people who have not saved your number.
You can only broadcast to 256 contacts per list, making it inefficient for large-scale outreach.
Without segmentation and personalization features, targeting your messages effectively is hard.
You can’t track or analyze your broadcast's performance, so you're left in the dark about how well your campaigns are performing.
WhatsApp broadcast software can solve these problems, helping you to engage the right audience at the right time.
Read more: WhatsApp Business API: A definitive guide for your business
Kota Baru Parahyangan (KBP) streamlined lead conversion with SleekFlow’s centralized inbox and personalized messaging
Kota Baru Parahyangan (KBP), a pioneering real estate development in Bandung, Indonesia, was using the free WhatsApp Business App for its marketing communications.
This process was not only time-consuming and error-prone but also slowed down lead conversion and required staff to constantly switch between apps to manage inquiries.
KBP utilized SleekFlow's centralized inbox to manage conversations in one place, and integrated their customer database to streamline lead management with segmentation.
Sending personalized messages to over a 1,000 contacts at once.
Achieving an impressive 71% open rate, far higher than traditional channels like email.
How to choose the best WhatsApp bulk sender software?
To choose the right WhatsApp broadcast software for your business needs, consider the features below:
Always ensure the software is a Meta-verified business solution provider (BSP). WhatsApp does not support third-party BSPs, so working with a verified provider guarantees reliability, security, and compliance with WhatsApp's business policies.
Depending on your contact list size, you’ll need software that can handle large bulk messaging capacity without performance bottlenecks. Some software limits the number of messages or recipients you can send to within a day, week, or month, so ensure it aligns with your requirements.
Bulk sending pre-approved WhatsApp template messages ensures that businesses can reach their target audience, even if the 24-hour conversation window has closed. Therefore, look for a platform that offers a template manager, which allows you to view, create, and manage templates in one place.
Look beyond basic bulk messaging. Key features like AI agents, segmentation, automation, analytics, and integration are essential for optimizing engagement and streamlining business operations.
Even the best software can encounter technical issues. Ensure the platform has reliable and dedicated customer support, as well as a strong uptime record to minimize delays that could impact campaign success.
Pricing varies based on features and messaging limits. Choose software that fits your budget and can scale with your business as it grows. A flexible pricing structure ensures you only pay for what you need, while still leaving room for future expansion.
HKBN achieved 95% read rate and 50% response rate using SleekFlow’s WhatsApp Broadcast
Hong Kong Broadband Network (HKBN), a major telecom provider, traditionally relied on phone calls for customer engagement.
Answer rates for their calls were declining as customers became warier of scam calls and this made it difficult for HKBN to reach their audience for things like contract renewals.
HKBN adopted SleekFlow’s WhatsApp Business API solution. They enabled over a hundred agents to manage conversations and used the broadcast feature to run targeted campaigns.
95% read rate: Almost every targeted user opened the message.
50% response rate: Half of the recipients engaged with the campaign.
35% contract renewal rate: Over a third of the inactive users renewed their contracts.
The 8 best WhatsApp broadcast software for your bulk messaging campaigns
Before we dive into the details, we’ve created an at-a-glance comparison to help you quickly understand which tools stand out and how they can meet your needs. Whether it’s features, pricing, or ease of use, this comparison will make finding the right tool simple and straightforward.
1. SleekFlow
Image source: SleekFlow
SleekFlow is an AI-powered WhatsApp broadcast software and is an official provider of WhatsApp Business API that empowers businesses to optimize their customer communication and enhance engagement. With robust features in automation, personalization, and integration, SleekFlow enables effective and impactful WhatsApp broadcast campaigns. SleekFlow is GDPR-compliant and certified by ISO-27001. Free plan is available but businesses will need to subscribe to a paid plan to bulk send WhatsApp messages.
SleekFlow proudly showcases numerous accolades, check out SleekFlow's awards and achievements.
Main feature:
Support businesses in hosting and managing multiple WhatsApp Business accounts from a single platform.
Automated customer segmentation and data storage to create dynamic contact lists, and implement dynamic variables in messages content based on customer behavior and preferences to deliver hyper-personalized bulk messages.
Schedule WhatsApp broadcast campaigns to engage target customers at the right time.
Go beyond traditional bulk messaging marketing campaign with WhatsApp drip campaigns. SleekFlow’s Flow Builder allows businesses to easily create and run post-broadcast automations, strategically engaging your audience across every stage of the buyer's journey.
SleekFlow isn’t limited to WhatsApp. You can connect Facebook Messenger, Instagram DMs, SMS, and more, bringing all your customer conversations into one platform.
Native integration with external platforms such as HubSpot, Salesforce, and Shopify to create a single source of truth. Use API and webhooks to connect with your other existing tech stacks.
Train teams of AI Agents for your WhatsApp Business accounts with your company’s knowledge base to instantly handle follow-ups with quick, accurate, and contextually relevant responses.
Track the success of your broadcast campaigns with comprehensive analytics, giving you insights to refine your strategies and achieve better results.
Dedicated onboarding support and provide help center documentation along with email and chat support.
Walk through the interactive demo below and discover how SleekFlow helps marketers create successful campaigns in action.
Ready to transform your WhatsApp strategy into a high-converting channel?
Book a free demo with SleekFlow today to see how our AI-powered omnichannel solution can be customized for your business.
2. Brevo
Image source: Brevo
Brevo (formerly Sendinblue) is a comprehensive marketing platform offering solutions for email, SMS, live chat, and WhatsApp. The platform is ideal for brands that need to manage contact lists, and bulk send promotional messages. Brevo emphasizes creating an all-in-one marketing hub suitable for businesses of all sizes. You’d need to buy an add-on to send WhatsApp marketing messages with Brevo’s Marketing Platform.
3. WATI
Image source: WATI
WATI is a dedicated WhatsApp API platform with a strong focus on customer communication. Unlike omnichannel solutions, WATI specializes in WhatsApp, making it a great choice for businesses looking for advanced WhatsApp broadcast features without the need for multiple channels. Its easy-to-use drop-down makes it accessible to non-technical users.
If you need a platform for sending WhatsApp bulk messages occasionally, investing in a dedicated solution, like WATI, may not make sense. Besides, Wati only provides customer support through email, which means you won’t get instant solutions to your problems.
4. Gallabox
Image source: Gallabox
Known for its user-friendly interface, Gallabox allows businesses to create no-code chatbots and send bulk WhatsApp messages using the official API. Similar to WATI, Gallabox also focuses on WhatsApp. It offers a range of integrations, including CRM, and excels in multi-agent shared inbox features.
Read more: How WhatsApp Business API pricing works in 2026?
5. AISensy
Image source: AiSensy
AiSensy offers an official Whatsapp business API-based marketing and customer support platform. You can create chatbots and use the multi-agent shared inbox to collaborate with team members. With its personalized messaging campaigns feature, along with advanced analytics, businesses can monitor and optimize marketing results.
6. Twilio
Image source: Twilio
If you have a dedicated IT team with advanced coding & development skills, Twilio is one of the best WhatsApp broadcast software, as it’s built for developers. Their WhatsApp solution is highly customizable, making it suitable for businesses with complex communication needs.
Therefore, you would need a dedicated team of developers to begin with Twilio's WhatsApp Business API solution.
Learn how to track WhatsApp marketing ROI metrics in the comprehensive blog guide.
7. Insider
Image source: Insider
Insider is an all-in-one Meta-verified WhatsApp Business Solution Provider (BSP), Insider handles everything from account setup to template approvals. It enables businesses to send personalized messages based on user behavior and preferences. Insider stands out for its conversational commerce feature, allowing customers to complete purchases directly within WhatsApp.
8. MessageBird (Bird)
Image source: Bird
Bird is another omnichannel platform offering robust APIs for WhatsApp, SMS, and social media. It stands out for its focus on engagement and conversational marketing. With its tools for list growth, segmentation, and chatbots, it empowers businesses to create targeted campaigns and foster meaningful interactions with customers throughout their journey.
However, MessageBird might not offer the depth of specialization in WhatsApp that other platforms do.
SleekFlow vs Other WhatsApp Broadcast Software
When choosing WhatsApp broadcast software, many teams compare SleekFlow with tools like Respond.io and Wati. While all of them support WhatsApp broadcasting, SleekFlow is built for businesses that need more than WhatsApp alone, especially teams managing multiple channels, growing fast, or handling complex workflows.
SleekFlow vs Wati: Omnichannel messaging vs WhatsApp-only broadcast tools
Wati is positioned as a WhatsApp-first platform, mainly designed for SMBs running sales or e-commerce workflows directly on WhatsApp.
SleekFlow takes a broader approach. Instead of focusing only on WhatsApp, it supports true omnichannel messaging in one platform. Alongside WhatsApp, teams can also manage SMS, email, web chat, Instagram, Facebook Messenger, and TikTok messages, all from a single inbox.
This enables businesses to:
Run broadcast campaigns across multiple messaging and social channels
Maintain conversation context as customers move between platforms
Scale customer engagement without being limited to WhatsApp alone
For teams operating across multiple channels, SleekFlow provides greater flexibility than a WhatsApp-only solution.
SleekFlow vs Respond.io: Built with security and compliance in mind
Respond.io focuses heavily on operational reliability, highlighting features like high uptime, WhatsApp coexistence, and extended support availability.
SleekFlow, on the other hand, places strong emphasis on security and compliance, making it a better fit for businesses operating across regions or in regulated industries. This includes:
ISO 27001 certification
Architecture designed to support GDPR and regional data protection requirements
Role-based access control to help larger teams manage conversations securely
For organisations handling sensitive customer data, these considerations are often just as important as performance or automation features.
How SleekFlow’s AI goes beyond basic chat automation
Many WhatsApp broadcast tools describe themselves as “AI-powered,” but in practice this often means basic chatbots or rule-based auto-replies.
SleekFlow’s AgentFlow is designed to support agent-assisted AI workflows, helping teams automate early-stage conversations while keeping humans in control. With AgentFlow, businesses can:
Set up automated lead qualification flows to collect key information before routing conversations to human agents
Identify intent signals and prioritise conversations based on predefined rules or AI-assisted classification
Scale WhatsApp broadcasts and inbound messaging by automating repetitive interactions without increasing headcount
By combining AI-driven automation with smooth human handover, SleekFlow helps teams respond faster while allowing agents to focus on conversations where they add the most value.
Want to outcompete your peers with SleekFlow's help?
Book your personalised demo with SleekFlow today and unlock the potential of seamless communication
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