# Twilio. SMS

**Integration type**: `Write`

Ylem supports sending critical SMS alerts to the verified phone numbers of members of your organization.

**Data for the connection:**

<figure><img src="https://3180830455-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FD0FT8l3QzMrw546vOdHU%2Fuploads%2FdSqCFOFazycGQM94WQJH%2FScreenshot%202024-07-28%20at%2018.58.30.png?alt=media&#x26;token=5842ee4d-d06d-4f11-8d9a-0dfe8da69034" alt=""><figcaption></figcaption></figure>

### On-Premise/Open-Source Configuration

If you use on-premise or open-source editions of Ylem, to be able to use this task, you need to create your own [Twilio](https://www.twilio.com/) account and configure the following parameters:

```bash
YLEM_INTEGRATIONS_TWILIO_ACCOUNT_SID=
YLEM_INTEGRATIONS_TWILIO_AUTH_TOKEN=
YLEM_INTEGRATIONS_TWILIO_NUMBER_FROM=
```

The following variables need to be placed in the root folder file `./.env`.common

Read more about setting up Twilio auth token and account sid [here](https://www.twilio.com/en-us/messaging/programmable-messaging-api).

Accounts and API tokens can be viewed in the Twilio dashboard here: <https://console.twilio.com/us1/account/keys-credentials/api-keys>