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Free users will have to stick with one of the awesome options already mentioned.

Office 365 subscribers have the option to add S/MIME encryption to their account. Your recipient should receive the message, copy the contents to the InfoEncrypt site, enter the password, and select Decrypt. Symmetric encryption is also known as secret key cryptography. You essentially encrypt your message using a single cryptographic key, and the recipient cannot unlock your message without that key. Symmetric encryption is a very secure but more simply encryption method. This asymmetric encryption is also known as public key cryptography. If someone else acquires it, they can unlock your messages.

Unlike the public key, the private key must remain secure at all times. When the encrypted messages hit your inbox, you decrypt it using your private key. You can send your public key into the wild because with it, people can encrypt messages specifically for you. An asymmetric encryption tool involves two separate keys: a private key and a public key. But what does that mean?Īsymmetric encryption is the most common encryption type found on the internet today. You will use either symmetric or asymmetric encryption to protect your data. Which Encryption Is Best to Protect Webmail?īefore we look at the encryption tools, it is important to understand what types of encryption are available to you when using Gmail,, or other webmail services.