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Send your first WhatsApp message with the Hypersender WhatsApp API in Postman. The interactive demo shows the flow end to end, and the written steps below mirror it so you can reproduce the same request in your own code.

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What you need

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Request

POST https://app.hypersender.com/api/whatsapp/v2/{instance}/send-text

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Queued responses

Every V2 request is queued. The API acknowledges immediately with a queued_request_uuid instead of the final send result:
Call the queued_request_link, or use the Get Queued Request endpoint, to read the actual result. See Queued Requests for the full model.
For production traffic, prefer send-text-safe: it paces messages and simulates typing, which reduces the risk of your number being blocked.

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Troubleshooting

Check that the Authorization header uses Bearer YOUR_API_TOKEN and that the token is current.
Send the full identifier, for example [email protected]. The API can return a validation error when the number is not on WhatsApp; see Check Contact Exists.
Check response_status and response_body in the queued request result, and confirm the instance connection before retrying.

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Next steps

Send Text reference

Every parameter for the text endpoint.

Queued requests

How the V2 queue works and how to read results.

Create your Hypersender account

Connect a WhatsApp number, get your API token, and send your first message.
Last modified on October 18, 2026