---
schema_version: "1"
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title: Event Notification Service
collection: developer
version: current
locale: en-us
portal_url: https://docs.salesforce.com/developer/current/en-us/marketing-cloud/guides/mc-apis/ens.md
canonical_url: https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/ens.html
source_site: developer.salesforce.com
content_type: documentation
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products:
  - Marketing Cloud Engagement APIs and Programmatic Languages
  - Marketing Cloud
---
# Event Notification Service

Use the API for Event Notification Service (ENS) to receive notifications if certain events occur. For example, ENS can send notifications if customers request password resets, get order confirmations, log in using two-factor authentication, and several other types of events.

- [Get Started with Event Notification Service](https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/ens-get-started.md)
- [Event Notification Service Activities](https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/ens-activities.md)
- [Event Notification Support for OAuth 2.0](https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/ens-oauth2-support.md)
- [Supported Notification Events](https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/ens-supported-events.md)
- [Relate ENS Sent Events to Engagement Events](https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/ens-sent-to-engagement.md)
- [Subscription Filters](https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/ens-subscription-filters.md)
- [Notification Signing](https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/ens-notification-signing.md)
- [Retries and Callback Suspensions](https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/ens-retries-suspensions.md)

For more information about using REST API to manage callbacks and subscriptions for ENS, see the [ENS API Reference](/docs/marketing/marketing-cloud/references/mc_rest_event_notification).