PGP/Pretty Good Privacy is a very good technique to encrypt and decrypt email over the web.PGP verifies the sender authenticity with digital signatures and encrypts the message.This will make sure the message is not tampered in the network and only you will be able to decrypt the message.
Enable encryption for every email.
Use 2 factor authentication for verification.
Eliminate spam, phishing and malware.
Change your password often.
Don’t give your email address to sites you don’t trust.
Don’t click the “Unsubscribe” link in a spam email.
Don’t send personal information in an email message.
The inbox design is very simple to keep clutter away and make it easy to access the contents easily.
All authentication sessions are logged and you can verify your own logs.
All emails are secured automatically with end-to-end encryption.