Tutanota

Tutanota is an end-to-end email encryption service. Since it is an open-source email service, there are no privacy concerns as it can be verified anytime by security experts. With its compatibility across multiple devices, it is easily accessible from anywhere.

As most of the formal communication happens on email, organizations usually seek services that help them have secure and private communication. Tutanota solves this problem by ensuring end-to-end email encryption.