> ## Documentation Index
> Fetch the complete documentation index at: https://docs.slm.m1amdocs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Customer Notifications

Subscribe can automatically issue customer notifications at predefined moments in the billing cycle, using customized email templates. Templates can be defined to notify your customers of billing events (imminent, in-process, successful, or failed), to submit invoices, to warn of a pending subscription expiration, to inform of an overdue balance, or to simply keep them informed of changes in their subscription plan. Work with Vindicia Client Technical Services to create billing or invoicing templates, as well as email templates to keep your customers informed and engaged in their relationship with your company and your products.

**Note:** Creating Subscribe templates differs for Billing notifications and Invoicing events. In that Billing templates use a different tag format than Invoicing templates. Be certain to use the appropriate system when creating your Templates.

Subscribe requires that you submit an email template as well, in order to send out the Billing and Invoicing notifications by email to your customers. The email template contains the email headers; the Billing and Invoicing templates include the email `contents`.

## Important to know

* If you do not submit an email template, no notifications will be emailed to your customers.
* If you do not define any templates, no notifications will occur. For example, if no Soft Fail notification is in the database, Subscribe will not notify the customer on a soft fail.
* Template toolkit plugins for email processing is not supported by Subscribe.
* If you do not set a preferred language for any template and an English template exists in the database, Subscribe notifies the customer using the English language template.
* For prebilling notifications, subscribe uses the Billing Plan object attributes:

  *

```
`prenotifyDays`
```

for SOAP API

*

```
`billing_notification_days`
```

for REST API

If set to `0` or not set, Subscribe sends no prebilling notifications.

* **[Set the Preferred Language](../topics/Setting_the_Preferred_La)**

* **[Working with Billing Events](../topics/Working_with_Billing_Eve#)**

* **[Working with Invoices](../topics/Working_with_Invoices#)**


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