Unlimited Messaging icon

Unlimited Messaging

Send and receive WhatsApp messages via the Unlimited Messaging API

Actions4

Message → Send

AI-generated

Summary

Send a WhatsApp message to a recipient through the Unlimited Messaging API. Provide the recipient’s phone number in E.164 format and the message text; optionally choose a SIM ID to send from.

Inputs

  • Recipient (required) — Recipient phone number in E.164 format.
  • Text (required) — Message content; the UI documents a maximum of 1,600 characters.
  • SIM ID — SIM card (WhatsApp account) ID to send from. Leave empty to let Unlimited Messaging choose one automatically.

Output shape

A single item containing the API response for the sent message, for each incoming item.

The node sends a POST request to the message endpoint and passes the recipient and text, plus simId when provided. API errors stop execution unless Continue On Fail is enabled, in which case the item contains an error field.

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