Pick a WhatsApp platform by the layer you need. Developers who want raw access should choose an API provider; support teams answering customers together need a shared inbox; and marketers sending campaigns and broadcasts are better served by a WhatsApp marketing tool. Many businesses end up using two layers that connect.
Which layer of WhatsApp messaging are you really buying? That's the question to answer before you leave Gupshup, because the alternatives sit at very different levels. Some hand your developers an API and nothing else, some give your support team a shared inbox, and some are built for marketers who want broadcasts and automations without code.
Decide your layer in four steps
- Ask who'll use it every day: developers, support agents or marketers.
- List the channels you need now and next, such as WhatsApp only or WhatsApp plus SMS, email and voice.
- Decide whether you'll build your own interface on an API or want a ready-made screen to work in.
- Check whether you need AI agents or chatbots to answer customers before a person steps in.
API, inbox or broadcast: who sits where
Going by each vendor's own description, as of Nov 2026, the split looks like this:
- API providers. 360dialog presents itself as an official Meta partner for the WhatsApp Business API. Twilio, Infobip, Sinch and Bird are broad communication APIs that cover WhatsApp next to other channels.
- Team inboxes. Trengo is a shared inbox that says it's a WhatsApp Business Partner, so agents can answer customers together.
- Marketing and broadcast tools. AiSensy and Interakt sell WhatsApp marketing and customer engagement, while Wassenger describes an AI-native operating system for WhatsApp. Gallabox leads with omnichannel AI agents for customer conversations.
So decide whether you need raw API access, a team inbox or marketing broadcasts before you compare features. An API provider won't give your support team a screen to work in, and a broadcast tool won't help your developers build a custom app.
Ten WhatsApp and messaging platforms
In no particular order, sorted A to Z, each with one line on who it helps.
360dialog
Best for: Developers wanting direct WhatsApp Business API access from a solutions platform that describes itself as an official Meta Partner.
AiSensy
Best for: Marketing teams sending WhatsApp broadcasts and automations, with a free WhatsApp API and free tools such as links and QR codes.
Bird
Best for: Developer teams building their own messaging features on a communications platform made for developers.
Gallabox
Best for: Businesses wanting omnichannel AI agents to handle customer conversations.
Infobip
Best for: Companies running customer communication across any channel, now with an agentic AI platform and a try for free option.
Interakt
Best for: Businesses focused on customer engagement through the WhatsApp Business platform, with a free trial on offer.
Sinch
Best for: Engineering teams needing APIs for SMS, RCS, WhatsApp, voice, email and verification from one provider.
Trengo
Best for: Support teams wanting a shared omnichannel inbox, with the vendor stating it's a WhatsApp Business Partner and Meta Business Partner.
Twilio
Best for: Developers adding the WhatsApp Business API next to voice, SMS and other channels they already build on.
Wassenger
Best for: Teams wanting an AI-native operating system for WhatsApp, covering campaigns, broadcasts and an AI assistant, with try it free.
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The ten by layer and use
| Tool | Layer | Good for |
|---|---|---|
| 360dialog | WhatsApp API provider | Direct WhatsApp Business API access |
| AiSensy | WhatsApp marketing | WhatsApp broadcasts and automation |
| Bird | Communications for developers | Developer-built messaging across channels |
| Gallabox | Omnichannel AI agents | AI agents across customer conversations |
| Infobip | Omnichannel platform | Customer messaging across any channel |
| Interakt | WhatsApp engagement | Customer engagement on WhatsApp |
| Sinch | Communication APIs | SMS, RCS, WhatsApp, voice and email APIs |
| Trengo | Shared inbox | A shared team inbox for WhatsApp and more |
| Twilio | WhatsApp Business API | WhatsApp alongside voice, SMS and other channels |
| Wassenger | WhatsApp operating system | Campaigns, broadcasts and an AI assistant |
If a shared inbox is the layer you need, compare these shared inbox options for WhatsApp support. If marketing is the focus, this list of WhatsApp marketing tools goes deeper.
Opt-in, templates and the rules you can't skip
Whichever tool you pick, WhatsApp's own business rules still apply. Customers need to have agreed to hear from you before you message them first, and outbound messages outside a customer conversation usually need pre-approved templates. Check Meta's current WhatsApp Business policy before you plan any campaign.
- Collect opt-ins clearly, on your website, at checkout or in a conversation, and keep a record of them.
- Prepare your message templates early, because approval can take time.
- Plan how customers can opt out, and make sure every tool you use respects it.
- Check where conversation data is stored, as data protection requirements vary by country, so confirm with your regulator.
If you want automated replies too, this guide to WhatsApp chatbot builders covers that side.
Advice for teams moving their WhatsApp messaging
Move your phone number and templates carefully. Your WhatsApp Business number and approved templates are what customers recognise, so ask any new provider exactly how they'll migrate them and how long your number might be offline during the move.
Then keep the layers honest. If your developers love an API, let them have it, and add a shared inbox on top for the support team rather than forcing agents into a developer tool. If marketing is the only job, a broadcast tool will be quicker to launch than building on an API. Start with the smallest setup that does the work, and add layers when your team asks for them.
Do you make WhatsApp or business messaging tools? Tool makers can ask to be considered for a featured place on this list.
Want your tool on this list? Featured spots and reviews here are paid partnerships. Here's how to partner with me.
Frequently asked questions
What's a WhatsApp Business API provider?
It's a company that connects your business to the WhatsApp Business API so you can send and receive messages at scale. Some offer only the API connection, while others add inboxes, chatbots or marketing tools.
Can I keep my WhatsApp number if I switch provider?
Usually, yes, but the process varies by provider. Ask how they migrate numbers and approved templates, and plan the move for a quiet period in case messaging pauses briefly.
Do I need a shared inbox as well as an API?
If several people answer customers on WhatsApp, a shared inbox stops replies clashing and lets you assign chats. If only an app or system sends messages, an API alone may be enough.
What are WhatsApp message templates?
They're pre-approved messages used to contact customers outside an ongoing conversation, such as order updates or reminders. Each one needs approval before you can send it.
Is WhatsApp marketing allowed without opt-in?
No. Customers must agree to receive your messages first. Check Meta's WhatsApp Business policy and the data protection rules in the countries you message.
