# Workflow Application: SENDMESSAGE usage **URL:** \ **Category:** Workflow Applications\ **Created:** [January 11, 2017, 5:00am UTC](https://discuss.workflowgen.com/t/workflow-application-sendmessage-usage/490 "2017-01-11T05:00:00Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![wfg-admin](https://yyz2.discourse-cdn.com/flex030/user_avatar/discuss.workflowgen.com/wfg-admin/32/714_2.png) [@wfg-admin](https://discuss.workflowgen.com/u/wfg-admin)\ **Post date:** [January 11, 2017, 5:00am UTC](https://discuss.workflowgen.com/t/workflow-application-sendmessage-usage/490/1 "2017-01-11T05:00:00Z")
The SENDMESSAGE workflow application lets users send SMS notifications using the Twilio SMS platform. To use SENDMESSAGE, you’ll first need to set up a Twilio account at [https://www.twilio.com/sms](https://www.twilio.com/sms). In this tutorial, we’ll configure WorkflowGen to use Twilio, then add fields to a form that will let users send SMS messages. 1. In the Administration Module, click the gear icon to open the Configuration Panel. 2. In the **Instant messaging** section on the **General** tab, enter your Twilio **Account SID** , **Auth Token** , and **Sender number**. 3. Check **Logs** if you want to enable message logging. 4. In the Form Designer, add two TextBox fields: one for the message body (the `BODY` parameter) and one for the recipient’s phone number (the TO parameter). 5. On the **Mapping** tab, create the OUT values for the message body and the recipient’s phone number. 6. In the Workflow Designer, add a SENDMESSAGE action to your process. 7. On the **Parameters** tab in the **Edit action** panel, set the values of the `BODY` and `TO` parameters as the corresponding data you created for the message body and the recipient’s phone number. 8. You can add optional parameters on the **Parameters** tab by clicking the **+** in the **Additional parameters** section (see the **Optional parameters** table below), then mapping their values in the Form Designer. ### 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-](https://support.twilio.com/hc/en-us/articles/223134387-What-is-a-Message-SID-) | | `ERROR_MESSSAGE` | 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](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](https://www.twilio.com/docs/api/errors/reference) | \* These parameters must be associated to a Twilio account.