[Ospite]

I have heard about this company - https://www.avenga.com/magazine/cloud-transformation-and-the-dilemmas-of-cio/
They provide different software.

[Trexxert]

Goodnight. In general, I believe that data protection should be carried out absolutely wherever your information is stored. It's not just email. For example, it is important for me to protect all my files and programs. Therefore I am using SecureAge Security Suite https://www.secureage.com/products/enterprise-security-software. They also have mail protection. The main thing is that with PKI-based encryption, you don't have to worry about any information leaks. And all applications work unchanged, but are protected. But they have a specialized solution for protecting emails - Secure Email. So I advise you to contact them.

[Useusen]

Need good data protection for email.