# Send: SMS

Using the **Send: SMS** node, a Flow can send an SMS message to either a user or a specific phone number.

<figure><img src="/files/Ql0tqTJfilJymaCi1dyC" alt=""><figcaption></figcaption></figure>

| Property     | Description              | Explanation                                                                        |
| ------------ | ------------------------ | ---------------------------------------------------------------------------------- |
| Message      | The message body         | Can contain [variables](/studio/flows/variables.md)                                |
| Phone number | The recipient of the SMS | When this field is left blank, it will use the user's phone number in `user.phone` |

{% hint style="info" %}
Note that sending SMS using the platform will incur costs that will be invoiced.
{% endhint %}

## Resources

* [Variables](/studio/flows/variables.md)


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