[Novu][novu] provides open-source notification infrastructure for all communication channels in one place: Email, SMS, Direct, and Push. It integrates with almost all major email providers (Mailgun, Sendgrid, Postmark, etc.), SMS providers (e.g., Twilio or Plivo), and a large selection of push and chat providers (such as OneSignal or Slack) while providing a unified API for sending notifications.
1. Open https://web.novu.co and sign in with your existing Novu account credentials (create a new account with your email address and a password or sign in with GitHub if you don't have an account yet.)
For each notification type you want to send, you need to create a template in Novu. This is a one-time setup step that you can do on the Novu web interface.
It is possible to customize the notification content at each invocation via handlebars-style placeholders. For example, you can create a template for an email notification that looks like this:
```
Hello {{name}},
{{content}}
```
The placeholders will be replaced with the actual values of the `payload` object you pass to the `send` method.
4. Double-click the "notification name" field and enter the name of the template. For this example, we choose the name `send-sms`. This is the event name with which the respective notification may be triggered from the API.
6. Click inside the "SMS message content" text field on the right and enter the content of your SMS, e.g. a handlebars placeholder such as `{{content}}`.
The `subscriberId` is a required field with the ID of the subscriber in Novu. If a subscriber with a provided `subscriberId` does not exist yet in Novu, a new subscriber will be created before the trigger will be executed synchronously. You can find more information about subscribers [in the official Novu documentation][novu-subscribers].
