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id: d67de0e5-2ee8-4841-ac69-6a4462a87ee1
title: Send SMS
description: Call Flow Builder node to send an SMS
slug: /reference/send-sms
max-toc-depth: 3
----------------

The Send SMS node is used to send an SMS to a phone number.

## **Node Settings**

<ParamField path="To Phone Number" type="string" toc={true}>
  The phone number to which the SMS will be sent.
</ParamField>

<ParamField path="From Phone Number" type="string" toc={true}>
  The phone number from which the SMS will be sent.
</ParamField>

<ParamField path="SMS Text" type="string" toc={true}>
  The text of the SMS that will be sent.
</ParamField>

## **Example**

### Send SMS with variable

The example below is connected with a Request node that sends a request to a joke API.
Knowing the parameters of the API response, the node can pull the request’s response with `%{request_response.joke}`.
This example also includes messaging opt-out verbiage since this is important to avoid SMS spam blocks.

<Frame caption="Sending an SMS with a variable in Call Flow Builder">
  ![Sending an SMS with a variable in Call Flow Builder.](https://files.buildwithfern.com/signalwire.docs.buildwithfern.com/docs/b1de9ed818126179401580cd7712ec0fb54601a1f107493bc7e7f2dcf14ba535/assets/images/call-flow/nodes/send-sms.webp)
</Frame>

***

### Send SMS notification as Call Whisper

You might be using Call Flow Builder to forward calls to a personal cell phone. The example below will send an SMS to the specified phone number just before forwarding a call to that same number. This way you’ll receive a text letting you know this is a forwarded call from SignalWire and which original SignalWire number your caller dialed.

<Frame caption="Sending an SMS notification as a Call Whisper." ogImage>
  ![Sending an SMS notification as a Call Whisper.](https://files.buildwithfern.com/signalwire.docs.buildwithfern.com/docs/1a538d8b18153d38153f08b499446bf1d6ac1d6b3acf494e35e61bd5c7037d44/assets/images/call-flow/nodes/sms-whisper.webp)
</Frame>