| MailWebProxy | Notification mail sent proxy. |
| SaasAuthExtensions | |
| SaasDiscoveryKeyProvider | |
| SaasMailFileLoaderService | Mail file content loader for SaaS. |
| SaasMailSender | |
| SaasMailSentNotificationService | |
| SaasOutboxManager | Specialized for SaaS outbox manager. |
| IDiscoveryKeyProvider | Provides secret key. |