99.99%
Uptime
Transactional Gateway
WhatsApp delivery for systems people already trust.
Controlled WhatsApp delivery for transactional, operational, and customer lifecycle messages.
Use this built-in CMS and customer portal to onboard clients faster.
120ms
Webhook latency
98%
Docs coverage
Quickstart In 3 Steps
Connect and deliver in minutes
1
Create In App Dashboard
Instance provisioning is restricted to your WhatsApp Gateway dashboard.
Dashboard > Instances > Create Instance2
Connect In App
Open the instance manager and complete QR pairing.
Dashboard > Instances > Manage > Connect3
Send + Receive
Send messages and process webhook callbacks for events.
POST /api/send-message
Interactive Playground
Send test requests in real time
All outgoing messages must be sent through the WhatsApp Gateway application API so responsible messaging checks, fair-use limits, suppression rules, and policy logging are applied before delivery.
Request
curl -i -X POST "https://evoapi.faisak.com/api/send-message" \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{"instance_id":"gateway-demo","phone":"9665XXXXXXXX","message":"Your invoice INV-2041 is ready. Please check your customer portal.","message_purpose":"transactional"}'Response
{
"key": {
"id": "3EB0XXXX",
"remoteJid": "9665XXXXXXXX@s.whatsapp.net"
},
"status": "PENDING"
}Request
Configure webhook delivery in the customer portal:
Dashboard > Instances > Manage > WebhookResponse
{
"destination_url": "https://your-app.example.com/webhook",
"events": ["message.received", "message.status_updated"],
"status": "active"
}Generated cURL Command
curl -i -X POST "https://evoapi.faisak.com/api/send-message" \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{"instance_id":"gateway-demo","phone":"9665XXXXXXXX","message":"Your invoice INV-2041 is ready. Please check your customer portal.","message_purpose":"transactional"}'Use an instance created and connected from your app dashboard.
Response Preview
{
"key": {
"id": "3EB0XXXX",
"remoteJid": "9665XXXXXXXX@s.whatsapp.net"
},
"status": "PENDING"
}Create your account and start building in minutes.
Everything You Need To Build
Core platform capabilities
API Access
RESTful JSON APIs for messaging delivery and webhook operations.
Webhooks
Receive real-time events for delivery, incoming messages, and status.
Analytics
Track message outcomes and monitor latency across your integrations.
Security
MFA, CSRF protection, and role-based permissions for customer accounts.
Multi-Channel
Integrate your apps, CRMs, and automation flows with one gateway API.
SDK Friendly
Clear endpoint patterns for Node.js, PHP, Python, Java, and Go clients.
Security You Can Trust
- API keys with fine-grained permissions
- Multi-factor authentication (MFA)
- CSRF protection across dashboard actions
- AES-256 encryption for protected data
Built For Reliability
- 99.9% uptime target service objective
- Automatic webhook retry guidance
- Real-time monitoring and health checks
- Global-ready infrastructure patterns
Simple, Transparent Pricing
Fair-use plans for transactional delivery
Starter
$5 / 30 days
Best for testing and small transactional alerts.
- 1 WhatsApp instance
- 100 messages per day
- 2,000 messages per month fair use
- API access, webhooks, message logs, and customer portal
- Responsible messaging controls
- Marketing is not allowed
Growth
$12 / 30 days
Best for active business workflows.
- Up to 3 WhatsApp instances
- 500 messages per day
- 10,000 messages per month fair use
- Message logs and basic webhook logs
- Use-case review required
- Marketing is not allowed
Scale
$30 / 30 days
Best for multi-branch operations, agencies, and higher transactional usage.
- Up to 10 WhatsApp instances
- 1,500 messages per day
- 30,000 messages per month fair use
- Message and webhook logs plus customer management
- Manual approval required
- Higher compliance monitoring
Need higher transactional limits?
Higher limits are available only after manual review. WhatsApp Gateway does not approve marketing, spam, or cold outreach use cases.
All plans include fair-use message limits to protect gateway reliability and discourage spam or marketing abuse.
Docs, API Contract & SDK Examples
SDK examples are available now. Official package releases are being prepared.
Published public pages: 0
SDK Examples
Node.js
Python
PHP
Go
Java
.NET
SDK Examples
Explore PHP, Node.js, and Python examples for sending messages, handling errors, and verifying webhook signatures.
OpenAPI Specification
Review the OpenAPI v1 contract or download /openapi.json for client generation.
Postman Collection
Download the Postman collection and test WhatsApp Gateway APIs quickly.
API Reference / Send Message
Start with POST /api/send-message and responsible messaging examples.
Frequently Asked Questions
Common integration questions
How does onboarding work?
Create account, create/connect instance from your dashboard, generate API key, configure webhook, then send first test message.
Can I use my own phone number?
Yes. Use your dedicated WhatsApp number and connect it to your instance through QR pairing.
How do webhooks work?
Configure webhook URL and selected events. The gateway sends JSON events for delivery and inbound updates.
What happens if I exceed my limits?
Messages can be blocked or queued for review. Higher transactional limits require use-case review.
Do you support both sending and receiving?
Yes. You can send outbound messages and receive inbound events with webhook callbacks.
Can my developers get a full guide?
Yes. Use the Download PDF button to share one complete developer guide with your team.
Ready to connect your workflows?
Build reliable WhatsApp notifications for expected transactional and operational communication.
