Your WhatsApp number
Link it with a QR code
Scan a QR code from WhatsApp and send from the number your customers already know. Unlimited messages at a flat monthly price.
Unlimited WhatsApp from your own numberEmail and WhatsApp
in one request, free
Reach your customers by WhatsApp and by email with a single API call, from your own number and your own mailbox. Free plan included, unlimited WhatsApp at a flat price.
- Messages included per month
- ∞
- Messages / month
- Channels in a single API request
- 2 in 1
- Email + WhatsApp, one request
- Supported countries
- 180+
- Supported countries
Trusted by
Why it's different
The direct alternative to the WhatsApp Business API
Real SIMs, no Meta
Your WhatsApp messages go through real eSIM cards, bypassing Meta's servers and account approval process entirely.
Flat price, not per message
A flat monthly fee per SIM, regardless of volume. No billing surprises, even during sending spikes.
REST API in 5 minutes
A standard REST API and JavaScript/Python SDK. No proprietary SDK, no complex webhooks to configure.
One request, two channels
The same message by WhatsApp and by email, in one API call
Put the phone and email of your contact in to, list the channels, and POST /message does the rest. Each channel gets its own message and its own delivery status.
- Override per channel
- Each channel entry can set its own text, HTML body or subject. WhatsApp gets the text, or your HTML converted to plain text.
- Attachments
- Up to 20 files by email (25 MB in total), one file per WhatsApp message.
- One channel still works
- recipient accepts a phone number or an email address: the single-channel form keeps working as before.
- Wherever you work
- REST API, TypeScript and Python SDKs, and the web dashboard.
POST /messageJSON
{
"to": { "phone": "+33612345678", "email": "[email protected]" },
"subject": "Your order is ready",
"text": "Hello, your order is ready for pickup.",
"channels": [{ "channel": "WHATSAPP" }, { "channel": "EMAIL" }]
}Developer experience
One token in your .env. That's it.
SMTP_HOST, SMTP_USER, WA_API_KEY, WA_PHONE_ID…
With UnlimitedMessaging: UM_API_KEY. Nothing else.
.env7 variables
SMTP_HOST=smtp.gmail.com
SMTP_PORT=587
SMTP_PASS=••••••••••••
WA_PHONE_ID=1234567890
WA_API_TOKEN=EAAXxx…
WA_VERIFY_TOKEN=abc123
UM_API_KEY=sk_live_…
Your own infrastructure
Your number, your mailbox. We only carry the message.
UnlimitedMessaging never hands you a sending address. You connect the accounts you already own, so your identity, your sender reputation and your replies stay yours.
Free, on every plan.
Included in every plan, Free too. On Free, messages carry a small footer; Medium and Max remove it.
One inbox for replies
Incoming emails land in the dashboard, grouped by thread. Webhook push on Medium and Max.
Threads kept
Replies stay in the same conversation using standard Re:, In-Reply-To headers.
Bounce protection
A hard bounce pauses that address for 30 days so you stop writing to it automatically.
Your sender score
Deliverability grows with your domain and number — not with ours.
AI-ready · MCP
Works with Claude & ChatGPT
Send emails and WhatsApp messages from your AI assistant. Ask Claude or ChatGPT to write to a customer, check delivery, or list your conversations.
MCP server endpoint
https://api.unlimitedmessaging.app/mcpclaude.ai
Claude SonnetSend Marie a WhatsApp and an email: Hello, see you tomorrow!
Done! ✅ I sent it to Marie by WhatsApp and by email.
ChatGPT
GPT-4oShow me my last messages
Here are your 3 latest messages:
| To | Status | Time |
|---|---|---|
| Marie | ✓Sent | 2m |
| Thomas | ✓Sent | 8m |
| Paul | ⏳ Queued | 12m |
∞ Unlimited messages
Flat monthly price - never charged per message
Free plan
FREE
No credit card · no commitment
+
e-SIMs included · your numbers welcome
Our own numbers on every plan - or plug in yours via QR code.
Web app
No-code interface for marketing teams
API & SDKs
REST API and SDKs for developers
- 9,652+
- Messages sent
- 90+
- SIMs connected
- 108+
- Registered users
Why we built this
We were building apps that needed to send WhatsApp messages, and we just needed to test that quickly, without paying for a business subscription.
No service offered a real free plan for that. So we built our own.
Today: real infrastructure, monitoring, a team of engineers, and a community that keeps growing every month.
Privacy
Privacy isn't optional
Your WhatsApp conversations and your emails hold sensitive information. We treat them that way: EU hosting, encryption (your mailbox password included), and your data is never sold to anyone. It's not a marketing line, it's how the service is built.
Read our privacy policy →Hosted in Europe
Servers and databases hosted exclusively in the European Union.
GDPR compliant
Access, correction, deletion: your rights honored within 30 days.
Your SIM stays yours
No admin can send a message from your personal SIM.
Never sold
Your number and your data are never sold or shared with third parties.