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# Send SMS

> Call Flow Builder node to send an SMS

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

## **Node Settings**

**`To Phone Number`** `string`

The phone number to which the SMS will be sent.

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**`From Phone Number`** `string`

The phone number from which the SMS will be sent.

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**`SMS Text`** `string`

The text of the SMS that will be sent.

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## **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.

After the joke **Request**, configure **Send SMS** with text `%{request_response.joke} Reply STOP to end`, plus the destination and originating phone numbers.

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### 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.

Flow topology: **Handle Call** → **Send SMS** → **Forward to Phone**, using the same destination number for the SMS and forward. The message includes `Inbound call from %{call.from} to your SignalWire number %{call.to}`.

> Call Flow Builder node to send an SMS