What is Encrypted Email?

Encrypted email is a feature that encrypts emails before they are sent, ensuring that information cannot be read or intercepted during transit. This helps prevent hackers from stealing sensitive data and causing damage to an individual or company’s reputation.

Email encryption can take place at the transport level (also known as hop by hop) or end-to-end. End-to-end encryption is a more robust form of protection than transport-level encryption.

What is encryption?

Email encryption is a security measure that scrambles the contents of Encrypted Email so they can only be decrypted by someone who has the correct key. This protects information that may include sensitive data, like login credentials or bank account numbers.

Encryption is part of a cybersecurity strategy that is important to both individuals and organizations. It is also a common requirement of certain Internet laws, including those that govern data privacy.

To encrypt an email, the sender and recipient each have a public key that’s used to secure the message. These keys are created and distributed by a public key infrastructure (PKI).

What is end-to-end encryption?

End-to-end encryption protects email communication from any third party, like an internet service provider (ISP), application service provider or hacker. Messages are encrypted on the sender’s device and decrypted at the recipient’s.

This method, known as asymmetric cryptography, encrypts messages with separate public and private keys. The public key is widely disseminated and can be used to encrypt the message, while the private key is kept secret and is needed to decrypt the message.

This type of security can help organizations meet regulatory compliance requirements and comply with industry best practices. It can also protect against message interception and manipulation in transit.

What is transport-level encryption?

TLS is a cryptographic protocol that safeguards your data by encrypting it so only the intended recipient can decrypt it. It also helps to keep your online transactions secure by preventing hackers from reading your email and passwords.

TLS can be deployed in conjunction with other protocols such as UDP and DCCP, as well as with the Transmission Control Protocol (TCP). It can protect a variety of applications including HTTP, FTP, SMTP and IMAP and can even secure videoconferencing, audio and instant messaging applications.

TLS uses a complex cryptographic system to ensure that all communications are secured from start to finish. A handshake is required to establish the connection and a plethora of cryptographic protocols make up the rest of the process.

What is symmetric encryption?

Email encryption is a security process that scrambles sent messages so they can’t be read by anyone who doesn’t have the right key. This makes them unreadable to unauthorized individuals who intercept the message in transit or during storage, making it more difficult for hackers to steal sensitive data.

Symmetric encryption uses a single secret key to encrypt and decrypt data. This method is a bit more complex than asymmetric encryption, but it’s also considered more secure.

Asymmetric encryption, on the other hand, relies on mathematically related public- and private-key pairs to encrypt and decrypt data. The public key is made available to anyone who wants it, and the private key is kept secret and used only by its owner.

What is asymmetric encryption?

Asymmetric encryption is a type of cryptography that uses mathematically linked public key pairs to encrypt and decrypt senders’ and recipients’ sensitive data. In contrast to symmetric encryption, which relies on the same encrypt-decrypt key for every user involved in an encrypted communication, users of asymmetric encryption have their own unique public key pair.

The public key is freely published and used for encryption, while the private key remains locked away safely. This helps protect against hackers knowing a user’s secret key and using it to break into encrypted email.


Asymmetric encryption also eliminates the need to distribute keys, a common security challenge in symmetric cryptography. By exchanging only the necessary public keys through public-key servers, and never over potentially compromised communication channels, asymmetric encryption eliminates a number of information security risks that can arise with poorly managed symmetric cryptosystems.

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