> For the complete documentation index, see [llms.txt](https://docs.workflowgen.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.workflowgen.com/admin/8.7/sendmessage-workflow-application.md).

# SENDMESSAGE Workflow Application

## Overview

The **SENDMESSAGE** workflow application lets users send SMS notifications using the Twilio SMS platform; to use this application, you’ll need to set up an account on the Twilio website at <https://www.twilio.com/sms>.

## How it works

The SENDMESSAGE application requires two parameters (`BODY` and `TO`) and associating these with their corresponding IDs.

The values that correspond to the `ACCOUNT_SID`, `AUTH_TOKEN`, and `FROM` parameters are required to connect to Twilio, but these are generally configured in the **Instant messaging** section on the **General** tab in the **Configuration Panel**. However, if they have been configured in the SENDMESSAGE action in the process, these values will override any corresponding values set in the Configuration Panel.

## Parameters

### Required parameters

| **Parameter** | **Type** | **Direction** | **Description**                                                                                                                      |
| ------------- | -------- | ------------- | ------------------------------------------------------------------------------------------------------------------------------------ |
| `BODY`        | Text     | IN            | Message text                                                                                                                         |
| `TO`          | Text     | IN            | Recipient’s phone number, which must contain the country code (using a `+` before the country code is optional, e.g. `+15551234567`) |

### Optional parameters

| **Parameter**   | **Type** | **Direction** | **Description**                                                                                                                                                              |
| --------------- | -------- | ------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `ACCOUNT_SID`   | Text     | IN            | Account security identifier \*                                                                                                                                               |
| `AUTH_TOKEN`    | Text     | IN            | Account authentication token \*                                                                                                                                              |
| `FROM`          | Text     | IN            | Sender’s phone number, which must contain the country code (using a `+` before the country code is optional, e.g. `+15551234567`) \*                                         |
| `MESSAGE_SID`   | Text     | OUT           | Alphanumeric code returned to identify successfully sent messages; for more information, see <https://support.twilio.com/hc/en-us/articles/223134387-What-is-a-Message-SID-> |
| `ERROR_MESSAGE` | Text     | OUT           | Message returned in case of error; for a list of Twilio error messages and codes, see <https://www.twilio.com/docs/api/errors/reference>                                     |
| `ERROR_CODE`    | Text     | OUT           | Error code returned in case of error; for a list of Twilio error messages and codes, see <https://www.twilio.com/docs/api/errors/reference>                                  |

\* These parameters must be associated to a Twilio account.


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