RMail for Zimbra adds the best in email encryption, email open tracking and certified email delivery proof integrated into the Zimbra compose email interface.
RPost Now in G-Cloud, a UK Government Authorized Cyber Solution
Zimbra S/MIME Demonstration
How you know if someone has opened and read your email
Email Encryption, E-Signatures, Registered Email Certified Proof
Building an Email Server on CloudRaya Using iRedMail
How To Check & Authenticate Emails: Ultimate Guide To Email
Zimbra Web Client User Guide (Advanced Client)
Email Encryption, E-Signatures, Registered Email Certified Proof
Email Encryption with Proof of Encrypted Delivery
S/MIME Certificate - Secure Email Encryption
Simple Method to Encrypt Email in Outlook
How To Check & Authenticate Emails: Ultimate Guide To Email