Send a Text Message
View All WhatsApp Messaging API APIs →Send a WhatsApp text message from a connected session to any recipient. The session must have completed login; if the connection has dropped since then, it is reconnected automatically before sending. Pass the recipient's full international number (digits only, no +) in to and the message in text. Returns the upstream messageId and a sent status. Fails with 400 only if the session never logged in, was logged out, or cannot be reconnected.
API Features
Send by phone number Deliver a text message to any recipient using their full international number — no prior chat required
Auto-reconnect If the session dropped since login, the connection is re-established automatically before the message is sent
Delivery reference Returns the upstream messageId so you can correlate the message with later chat history or receipts
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API Response (JSON)
{} Query Result
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Use Cases
- Transactional notifications: order confirmations, shipping updates, OTP delivery
- Support bots: auto-replies, ticket updates, after-sales follow-up
- Marketing automation: trigger message pushes from n8n, Zapier, or Make (follow WhatsApp's rules)