Guaranteed low prices

WhatsApp Gateway & REST API
for growing businesses

Send WhatsApp OTPs, transaction alerts, broadcasts and autoreplies straight from your app. Multi device, attachment support, QRIS payment, live in minutes.

Start free — 1,000 messages Read the API docs

No credit card · Scan a QR and go · Servers in Indonesia

Everything you need

One dashboard for your devices, contacts, campaigns and WhatsApp automation.

📱

Multi Device

Connect several WhatsApp numbers at once with a QR code or pairing code, all under one account.

⚡

Simple REST API

A single POST /send endpoint for text, images, documents, buttons and scheduled messages.

📎

Separate Text & Attachment Quota

Plain messages and file messages are metered separately, so your usage stays clear and fair.

📢

Broadcast & Campaigns

Bulk send from your phonebook or a CSV with personalisation variables and randomised delays.

🤖

Autoreply & Chatbot

Reply automatically on keywords, with templates and active hours.

🔁

Device Rotator

Spread sending across several numbers in turn for safer delivery.

⏰

Schedules & Follow Up

Daily, weekly and monthly recurring messages plus automatic follow ups for new contacts.

📝

Public Forms

Build online forms that save contacts and fire a WhatsApp notification instantly.

🔔

Inbound Webhook

Every incoming message is forwarded to your server with its type, attachment and file URL.

Transparent pricing, guaranteed low

Every plan runs 30 days. Pay with QRIS inside the dashboard and quota activates automatically.

Free

IDR 0/month
  • 1,000 text messages
  • 1 device
  • API & webhook
Start

Lite

IDR 22,500/month
  • 1,000 text messages
  • Autoreply & templates
  • Priority queue
Choose

Regular

IDR 59,400/month
  • 10,000 text messages
  • 2 devices
  • Broadcast & campaigns
Choose

Regular Pro

IDR 99,000/month
  • 25,000 text messages
  • 2 devices
  • Rotator & schedules
Choose

Master

IDR 157,500/month
  • Unlimited text messages
  • 4 devices
  • All automation features
Choose

Integrate in 5 minutes

All you need is a device token and one endpoint to start sending.

# Send a text message
curl -X POST https://synerwa.net/send \
  -H "Authorization: DEVICE_TOKEN" \
  -d "target=6281234567890" \
  -d "message=Your OTP code is 123456"

# Send with an attachment
curl -X POST https://synerwa.net/send \
  -H "Authorization: DEVICE_TOKEN" \
  -d "target=6281234567890|Budi" \
  -d "message=Hi {name}, here is your invoice" \
  -d "url=https://contoh.com/invoice.pdf"

# Response
{ "status": true, "id": [128], "process": "pending" }

Ready to send your first message?

Sign up free, scan the QR and send your first 1,000 messages at no cost.

Create a free account

Frequently asked questions

 

What is a WhatsApp Gateway?

A service that connects your system or application to WhatsApp through a REST API, so OTPs, transaction alerts and broadcasts go out automatically instead of being typed by hand.

Can I send images and documents?

Yes. Synerwa supports images, video, audio and documents. Attachment messages are metered separately from text messages, so usage stays transparent.

How do I pay?

With QRIS directly inside the dashboard. Once the payment is verified, quota and device validity are extended automatically.

Is my number safe from being blocked?

Synerwa adds randomised delays between sends, a per-device queue and a rotator to spread load across numbers. Still, send only relevant messages to recipients who opted in.

Is there API documentation?

Yes. See the API documentation with curl, PHP, Node.js and Python examples.