WhatsApp API to send and receive messages from your system

Text, images, documents, locations, groups and real-time webhooks. Wire it to your AI chatbot, CRM or ERP with plain HTTP requests.

No card required · Flat $20 USD/month per number

M Mensato API online Do you deliver to Austin? Yes, arriving tomorrow before 2 pm ✓✓ Tracking: US-48210 📍 Live tracking Thanks! 🙌 Type a message POST /send · 200 webhook → your app
Mensato is not the official WhatsApp API and is not affiliated with Meta. It is an independent service with a flat $20 USD monthly fee per number, no per-conversation charges, no Meta approvals, and 24-hour support.
Features

Everything WhatsApp does, now in your code

Every number you connect becomes an HTTP endpoint. Talk to it from your backend, your CRM or your chatbot, and it replies like a person would.

Send messages and media

Text, images, video, voice notes, documents and locations. By URL or base64, to individuals or entire groups.

Reactions and message deletion Full group administration QR linking in seconds
Your order is on its way ✓✓ product_photo.jpg invoice.pdf248 KB · PDF 0:24 · voice note 📍 Delivery point

Receive in real time with webhooks

When someone writes to you, the message hits your server instantly: sender, content and attachments already downloaded. Or poll for it if you prefer.

Instant delivery to your endpoint Built for AI chatbots that answer on their own
WhatsAppincoming message Mensatowebhook Your app POST /your-endpoint · 200
Anti-ban

Best practices to protect your number

A blocked number is a stalled business. Sending in Mensato is designed to look human, and we guide you with responsible-use practices.

1

Randomized delays

Messages never fire in bursts: they are spaced with variable pauses between sends, the way a person would type.

2

Managed send queue

Every message enters a queue that regulates the outgoing pace and retries on failure, without saturating your number.

3

Gradual campaign distribution

For high volumes, we recommend splitting sends into blocks across different time slots instead of firing them all at once.

4

Region-aware infrastructure

We work to serve traffic from locations across the Americas, reducing unusual cross-region synchronization signals.

msg · 0:07s msg · 0:13s msg · 0:04s managed queue · human pace
Integrations

Connects to what you already run

The API is plain HTTP: any system that can make a web request can talk to it.

AI chatbots

Messages hit your webhook, your model replies through the same number.

CRMs

Log conversations and trigger messages from each customer record.

ERPs and billing

Order confirmations, PDF invoices and delivery updates from your back office.

n8n · Make · Zapier

Works with the HTTP Request node of any automation platform.

How it works

Your first message in three lines

Authenticate with your token, say who and what. No mandatory SDK, no ceremonial config: it's HTTP.

Get my token
curl
node
python

    
Pricing

One flat fee, no surprises

$20
USD per number, monthly · no per-message or per-conversation charges
Try 24 hours free
  • One WhatsApp number you fully control
  • Every message type included
  • Anti-ban send queue with randomized pauses
  • Webhooks plus AI, CRM and ERP integration
  • 24-hour support · Cancel anytime
FAQ

Before you ask

Is this the official WhatsApp API?

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No. Mensato is an independent service, not affiliated with Meta. In exchange, you skip Meta approvals and per-conversation pricing: a flat $20 USD per month per number.

How do you protect my number from bans?

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Sending goes through a managed queue with randomized pauses between messages, and we guide you on distributing large campaigns. No service can guarantee zero blocks, but these practices significantly reduce the risk.

How is it billed?

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Per connected number, $20 USD a month, with 24 hours free to start. Run several numbers; each is an independent instance.

Can I connect it to my CRM, ERP or n8n?

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Yes. The API is plain HTTP, so it works with any CRM or ERP that can make web requests, and with n8n, Make or Zapier through their HTTP Request node.

What kind of support do you offer?

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24-hour support. Write to us and a person who knows the product answers, in English or Spanish.

Connect your first number today

Create your account, verify your WhatsApp and send your first message in under five minutes.

Create free account