> ## Documentation Index
> Fetch the complete documentation index at: https://learn.workflow.dog/llms.txt
> Use this file to discover all available pages before exploring further.

# Send Transactional SMS

> Send a non-promotional SMS message through Brevo.

**Send Transactional SMS** sends an operational text message such as a
confirmation, alert, or one-time code.

## Inputs

| Input                   | Type          | Required | Description                                                                       |
| ----------------------- | ------------- | -------- | --------------------------------------------------------------------------------- |
| **Third-party account** | Brevo account | Yes      | The API key used to send.                                                         |
| **Recipient**           | String        | Yes      | Phone number with country code and 6 to 15 digits.                                |
| **Sender**              | String        | Yes      | Up to 11 letters or digits, or up to 15 digits.                                   |
| **Content**             | String        | Yes      | The text message to send.                                                         |
| **Tags**                | List of text  | No       | Up to 10 Brevo reporting tags.                                                    |
| **Unicode Enabled**     | Boolean       | No       | Enable accented characters, non-Latin scripts, and emoji.                         |
| **Organization Prefix** | String        | No       | A brand prefix added before the message; it counts toward the SMS segment length. |
| **Webhook URL**         | URL           | No       | URL that receives Brevo delivery events for this message.                         |

## Output

| Output         | Type   | Description                             |
| -------------- | ------ | --------------------------------------- |
| **Message ID** | String | Brevo's identifier for the SMS request. |

<Warning>
  Use this action only for transactional messages. Brevo automatically
  reclassifies content containing an opt-out stop code as marketing SMS, which
  can make the message subject to regional sending restrictions.
</Warning>

<Note>
  Message content plus the optional **Organization Prefix** counts toward the
  160-character segment limit. Longer messages may be split and consume multiple
  credits. Unicode messages can have a lower per-message character limit.
</Note>