Guide/SendApp Cloud/API
API and integrations
SendApp Cloud offers an HTTP API to send WhatsApp messages from your systems (management software, e-commerce, automations). Each connected account has its own credentials to use in the calls.
Updated on June 16, 2026 · 5 min read
Before you start
- A SendApp Cloud account with at least one connected number
- Basic knowledge of HTTP requests
Per-account credentials
Each connected number has an instance identifier and an access token. These are the credentials you use in API calls to send from the right number. Treat them like passwords.
What you can do
- Send messages (text and media) to a number or a group from a specific account.
- Integrate WhatsApp sending into your flows (order confirmations, notifications, alerts).
- Use the API even from generic tools that call HTTP endpoints.
Don't put credentials in public code (e.g. browser-side JavaScript). If they get exposed, regenerate them/reconnect the account.
Best practices
The anti-blocking rules apply via API too: distribute sends, respect a pace and volumes appropriate to the number's status, and send only to contacts who expect the messages.
Ready to put it into practice?
Open SendApp and follow the steps in this guide. Need help? Support is one message away.