Send a reaction and mark as read via WhatsApp API
This scenario combines sendReaction and readMessage during the 24-hour customer service window.
Common errors
| Status | API response | Cause | Fix |
|---|---|---|---|
| 401 | token is required | The request has no token. | Add your channel token as the token query parameter: https://api.1msg.io/{channelId}/{method}?token=… |
| 429 | too many requests. please try later | The channel is over its send rate. | Queue messages on your side and retry with exponential backoff. |
| 403 | access denied | The token is wrong, or belongs to a different channel than the URL. | Check that the token and the channelId in the URL belong to the same channel. |
Common questions
Related
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Ask for a photo or file via WhatsApp API template
The scenario sends the client a personalized WhatsApp template when support needs a photo, document, or proof to process a ticket and no 24-hour session is open.
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The scenario sends the client a personalized WhatsApp template when support needs more data to resolve a ticket and no session window is open.
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Ticket accepted notification via WhatsApp API
The scenario sends the client a personalized WhatsApp template when their support request is accepted for processing.
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Create a WhatsApp group via API (groups endpoint)
This scenario uses the groups API with a create operation to provision a named WhatsApp group for team broadcasts.
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WhatsApp Business API buttons: support menu example
This scenario sends an interactive button message with sendButton during the 24-hour customer service window.
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WhatsApp API session message: request ticket info
This scenario sends a free-text WhatsApp message with sendMessage inside the 24-hour customer service window.
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Ticket resolved notification via WhatsApp API
The scenario sends the client a personalized WhatsApp template when their support ticket is resolved.
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Send a contact card via WhatsApp API (sendContact)
This scenario sends a WhatsApp contact card with sendContact during the 24-hour customer service window.


