# Application Settings

- [Setup & Registration](/previous-release-versions/v4.2.7/user-manual/administrator/application-settings/setup-and-registration.md)
- [External Applications](/previous-release-versions/v4.2.7/user-manual/administrator/application-settings/external-applications.md)
- [Mail Settings](/previous-release-versions/v4.2.7/user-manual/administrator/application-settings/mail-settings.md)
- [Manage Certificate Features](/previous-release-versions/v4.2.7/user-manual/administrator/application-settings/manage-certificate-features.md)