Update email plugin docs (#49299)

docs/pages/admin-guides/access-controls/access-request-plugins/ssh-approval-email.mdx

@@ -11,6 +11,34 @@ letting you implement security best practices without compromising productivity.
 
 ![The email Access Request plugin](../../../../img/enterprise/plugins/email.png)
 
+<Details title="This integration is hosted on Teleport Enterprise (Cloud)" open={false}>
+
+(!docs/pages/includes/plugins/enroll.mdx name="the Email integration"!)
+
+![Enroll email plugin](../../../../img/enterprise/plugins/email/enroll-email.png)
+
+Configure and connect email integration by providing the following configuration
+values:
+
+**`Sender`**: Configures the sender address.
+
+**`Fallback Recipient`**: Configures the default recipient for Access Request
+notifications.
+
+**`Email Service`**: Selects the desired email service. Note: only `Mailgun` is
+supported for Teleport Enterprise (Cloud).
+
+![Configure Mailgun integration](../../../../img/enterprise/plugins/email/configure-mailgun.png)
+
+Complete Mailgun integration by providing the following Mailgun API
+configuration values:
+
+**`Domain`**: Configures the Mailgun sending domain.
+
+**`Mailgun Private Key`**: Configures the Mailgun API key.
+
+</Details>
+
 ## Prerequisites
 
 (!docs/pages/includes/commercial-prereqs-tabs.mdx!)