The WhatsApp Messaging API That Scales With Your Business.
Link your existing WhatsApp number in 60 seconds. Send rich media, documents, and interactive polls from a developer dashboard or our low-latency REST API. Pay strictly per message with integer paise wallet billing — zero monthly subscriptions, zero Meta BSP markups.
Hi team, can you send over the dispatch confirmation for order #WA-9481?
Your order has shipped via Express courier! Tracking ID: EXP-983204.
curl -X POST 'https://relaywa-web-production.relaywa-ogemsync.workers.dev/v1/messages' \
-H 'Authorization: Bearer rwa_live_7x9924e...' \
-H 'Content-Type: application/json' \
-H 'Idempotency-Key: order-dispatch-9481' \
-d '{
"phone": "+919876543210",
"type": "document",
"mediaId": "med_847192",
"filename": "Dispatch_Invoice_9481.pdf",
"caption": "Your order has shipped via Express courier!"
}'{
"jobId": "job_c927f81a301",
"status": "queued",
"category": "document",
"pricePaise": 100,
"walletBalancePaise": 9900,
"createdAt": "2026-11-08T10:42:15.000Z"
}Cloudflare Worker edge routing with durable worker queues.
Each customer gets dedicated Baileys socket execution.
Text, audio waveforms, video, PDF, polls, stickers & vCards.
Honest paise billing. No subscription minimums or hidden fees.
Built for Speed, Reliability, and High Concurrency
Engineered from the ground up to eliminate the friction, clunky templates, and exorbitant markups of traditional WhatsApp BSPs.
Sub-50ms Fast Ingestion
Requests hit Cloudflare edge nodes globally, validating bearer tokens, verifying integer wallet balances, and admitting jobs to durable queues in under 50 milliseconds.
- Instant HTTP 202 Accepted job responses
- Persistent WebSockets to WhatsApp network
- Zero client-side blocking or dropped connections
Reliable & Idempotent
Double-sends cost money and confuse customers. Provide a client Idempotency-Key header with every request. Retrying a network hiccup will never send twice or double-charge.
- Automatic deduplication across 24-hour windows
- Exponential backoff on upstream transient drops
- Pre-send failure guarantee with 100% wallet refund
Handles Bursty High Concurrency
Whether you send 10 order updates a day or burst 15,000 flash sale notifications in 10 minutes, our distributed queue architecture prevents socket crashes and protects your phone number reputation.
- Session-level queue rate limiters
- Intelligent throttle intervals to avoid WhatsApp spam triggers
- Horizontal worker scaling on server fleet
Trusted, Private & Encrypted
Messages are dispatched using WhatsApp’s native Signal protocol encryption. RelayWA does not store plaintext message contents longer than required for operational delivery status.
- Client credentials encrypted at rest
- Strict multi-tenant cryptographic isolation
- Zero monetization or selling of contact phone lists
Integer Paise Wallet Billing
Forget confusing monthly credits that expire or USD conversion fees. Fund your INR wallet through UPI, track every single send in real-time paise, and never pay for unused seats.
- Text at ₹0.80, video/document at ₹1.00
- ₹10 welcome credit after email activation
- Transparent UTR-verified UPI recharges
Direct Number Connection
Skip 3-week Facebook Business Manager document verifications. Simply link your existing SIM or business number by scanning a QR code from WhatsApp Linked Devices.
- Connect in under 60 seconds
- Keep your existing customer chat history
- No 24-hour template restriction windows
Support for All 10 WhatsApp Message Formats
From PDF invoices and animated stickers to interactive polls and voice notes, RelayWA handles every native message payload.
Plain & Formatted Text
Up to 4,096 characters with full markdown formatting (bold, italics, code, strikethrough).
High-Resolution Images
JPEG, PNG, WebP up to 10 MiB with optional caption and view-once security flags.
Video Streams & GIFs
MP4/MOV up to 50 MiB with inline video player, captions, and animated GIF loop playback.
Voice Notes (PTT)
Native push-to-talk voice notes with audio waveform visualization up to 16 MiB.
Documents & Invoices
PDF, DOCX, XLSX up to 100 MiB. Flat fee per file message — never billed per page!
Static & Animated Stickers
Custom branded WebP stickers up to 1 MiB for expressive brand engagement.
Interactive Polls
Single or multiple choice questions with 2 to 12 selectable options and live tallying.
Geolocation Pins
Precise latitude/longitude coordinates with business address and Google Maps links.
Contact Cards (vCard)
Send 1 to 20 business or personal contact cards bundled in a single interactive message.
Audio Tracks & Recordings
MP3/AAC audio files up to 16 MiB for music previews, podcast drops, and voice memos.
Pay Only For What You Send. Keep The Rest.
Every verified account receives ₹10 in free welcome credit. Top up your wallet in INR via UPI. No monthly recurring plans, no minimum balance requirements.
Official Message Rates (INR)
Authoritative Ledger Rates| Message Type | Included Specifications | Max File Size | Price Per Send |
|---|---|---|---|
| Text Message | Up to 4,096 chars, full formatting | — | ₹0.80 |
| Image Attachment | PNG, JPEG, WebP with caption | 10 MiB | ₹0.80 |
| Video Attachment | MP4, MOV with caption / GIF | 50 MiB | ₹1.00 |
| Voice Note (PTT) | Native waveform audio message | 16 MiB | ₹1.00 |
| Document | PDF, DOCX, XLSX (per file, not per page) | 100 MiB | ₹1.00 |
| Sticker | Static or animated WebP | 1 MiB | ₹0.40 |
| Interactive Poll | 2–12 options, single/multi select | — | ₹0.50 |
| Location Pin | Latitude/longitude, name & address | — | ₹0.50 |
| Contact Cards | 1–20 vCard contact cards | — | ₹0.80 |
Interactive Cost Estimator
Calculate your estimated monthly spend and compare with Meta BSPs.
You save approximately ₹4,750 per month with RelayWA’s zero-retainer, direct-connection model.
Connected and Sending in 3 Simple Steps
No developer approvals, no Meta API key waitlists, and no complex webhook configuration required.
Create Your Workspace
Sign up with your work email and verify your address. Your dedicated messaging container is provisioned immediately with ₹10 complimentary welcome credit.
Link WhatsApp Number
Open WhatsApp on your phone, go to Linked Devices → Link a device, and scan the temporary high-security QR code shown in your dashboard.
Automate & Send
Send manually from the rich web composer or issue requests to POST /v1/messages using your API key. Follow real-time delivery ticks in the message audit log.
Engineered for High Concurrency & Zero Dropped Jobs
How RelayWA securely processes your messages from initial HTTP admission to physical handset delivery.
1. Edge API Gateway
Validates bearer token scopes, verifies account health, and checks idempotency keys within 35ms.
Cloudflare Worker2. Atomic Paise Ledger
Debits exact message cost in integer paise. If wallet balance is insufficient, rejects safely with 402.
ACID Transaction3. Durable Wakeup Queue
Enqueues message payload with retry backoff and rate throttles to protect phone reputation.
High-Throughput Queue4. Baileys Engine Fleet
Dispatches through isolated persistent WebSockets directly to the WhatsApp Signal network.
Direct Handset SocketFrequently Asked Questions
Everything you need to know about RelayWA, rates, and connections.
Do I need a Meta Business Manager account?
No! RelayWA connects directly to WhatsApp via the open Baileys multi-device protocol. You simply link your phone by scanning a QR code from WhatsApp > Linked Devices, just like WhatsApp Web.
How does wallet billing and UPI recharge work?
Your wallet operates in exact integer paise. Text messages are ₹0.80, videos/documents are ₹1.00, and stickers are ₹0.40. You recharge your wallet via UPI to sumanmalikrepo@slc and submit your UTR reference in your dashboard for rapid verification.
What happens if my message fails to send?
If a message fails prior to dispatch authorization (e.g. invalid phone number format, network drop before queue admission, or cancelled job), 100% of the message price is refunded back to your wallet ledger immediately.
Can RelayWA handle thousands of concurrent users?
Yes. Our architecture runs on Cloudflare Workers edge nodes and distributed container fleets. Each customer account runs in an isolated socket session, so high volumes in one workspace never degrade another.
What is your dispute and refund policy?
RelayWA provides digital services with immediate wallet provisioning. In accordance with our terms, if an external payment dispute or bank chargeback is initiated without contacting support, account access is suspended immediately and no refunds will be granted.
How do I avoid having my WhatsApp number banned?
Always send messages that your recipients expect (such as transactional receipts, order updates, opted-in alerts, or OTPs). Avoid blasting cold, unsolicited spam lists. RelayWA includes built-in rate-limiting safeguards to pace delivery safely.
Ready to scale your WhatsApp communication?
Create your workspace in seconds, link your number, and test your first messages with ₹10 complimentary welcome credit.