Bulk WhatsApp messaging API

Bulk WhatsApp Messaging
without building infrastructure

Reach many customers from your own WhatsApp number using one API. Ideal for promotions, reminders, and operational broadcasts.

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How it works

Broadcast at scale with a REST API

Upload recipients or pass phone lists from your backend. FlareSend paces sends, supports scheduling, and works with your existing WhatsApp session via QR link.

Send to many recipients from a single API call or batch job
Schedule campaigns for off-peak hours
Use your own WhatsApp number — no Meta Cloud API setup required
Track delivery from your dashboard and webhooks
Flat 30-day plans with no per-message fees

How FlareSend connects: You link your own WhatsApp number by scanning a QR code, then call a simple REST API. Setup is fast and does not require Meta Cloud API business verification. For very large official-template campaigns, Meta’s Cloud API may still be a better fit — see the comparison.

POST /send-message (batch idea)

curl -X POST https://api.flaresend.com/send-message \
  -H "Authorization: Bearer YOUR_INSTANCE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "recipients": ["2547xxxxxxx", "2547yyyyyyy"],
    "type": "text",
    "text": "Flash sale ends tonight. Reply STOP to opt out."
  }'

FAQ

Quick answers

Is this the same as WhatsApp Business broadcast lists?

No. FlareSend exposes a messaging API so your systems can send programmatically. You still must respect WhatsApp terms and user consent.

Can I send unlimited bulk messages?

Throughput depends on your plan and healthy WhatsApp sending practices. Pace campaigns, message people who opted in, and keep content clear and useful.

Do I need Meta approval?

FlareSend connects via QR to an existing number. You do not go through Meta Cloud API business verification for this path.

Bulk WhatsApp Messagingwithout building infrastructure

Broadcast at scale with a REST API

Quick answers

Related guides

Ready to automate WhatsApp?

Bulk WhatsApp Messaging
without building infrastructure