Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.
Newton Mail - Newton is a fully featured mail client available for Android, iOS, macOS and Windows.
Symantec Data Loss Prevention - Fully protect your data with the comprehensive detection technologies and unified policies of Symantec's industry leading Data Loss Prevention (DLP).
Aqua Mail - Android Mail Client.
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.