A key component of secure digital communication
When it comes to safe email, encryption is a cornerstone of safe digital communication – and a necessity in an age of increasing cyber threats. As digital security becomes a critical factor in business, protecting emails has emerged as a key priority. Email encryption is no longer a technical luxury – it’s an expected standard whenever sensitive information is sent or received.
In this blog, we explore what encrypted email actually is, how the technology works, and how you can ensure that your emails meet today’s security standards and GDPR requirements.
Did you know that data leaks that include personal data lead to customer loss and impact on business sustainability?
Ponemon Institute
What is encrypted email?
Encrypted email is a type of email where the content of the message is encoded, so only those who have access to the necessary key or code can decrypt and read the content. Email encryption is often used to protect sensitive information such as personal details or business secrets. By encrypting emails, it is ensured that the content can only be read by the intended recipient, and unauthorised individuals cannot access the information.
Encrypted email typically requires that both the sender and recipient have access to an encryption key or code. This can happen automatically if both parties use an email client that supports encryption, or by manually sharing encryption keys and codes.
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How does encryption work?
Encryption transforms plaintext into encrypted text – also known as ciphertext – using an algorithm and a key. Only with the correct key can the ciphertext be decrypted back to its original form. There are two main types of encryption used in emails:
- End-to-End Encryption: Ensures that only the sender and recipient can decrypt and read the content. Even email service providers do not have access to the content of the message. This type of encryption encrypts the mail both when it is transmitted and when it is subsequently stored on the mail servers.
- Transport Layer Encryption: This encryption is also called TLS (Transport Layer Security). This type of encryption only encrypts the mail when it is transferred between mail servers.
Why is encrypted email important?
There are several reasons to use encryption for security when emailing.
- Data Security With the constant threat from cyber attacks, such as phishing attacks, encrypted email offers an additional layer of security by ensuring that only authorised parties can access the content of the email.
- Compliance For businesses in certain sectors, such as finance and healthcare, the use of encrypted email is often a requirement to comply with data legislation like GDPR.
- Privacy Personal information has become the currency of our time, and as it is subject to misuse, encrypted email provides a secure channel for communication by effectively protecting personal data.
Stop the GDPR monster before it gets its hold of your personal data
How to implement encrypted mail
Using encrypted email requires the use of software or services that offer end-to-end encryption. Some popular email clients, such as Microsoft Outlook, offer built-in encryption, but it’s important to research and understand the type of encryption they use and how the email client protects your data.
FAQ about encrypted email
Is encryption a requirement under GDPR?
Yes – if the email contains sensitive information. It is considered an appropriate security measure according to Article 32 of the GDPR.
Does Outlook encrypt emails?
Not in its standard version. You’ll need at least an E3 license for built-in encryption features.
What if the recipient doesn’t have an encryption solution?
Use a secure file-sharing service where they can access the content using a password or two-factor authentication.
Is it enough to write “confidential” in the subject line?
No. It has no technical effect and does not protect the data.
Looking to encrypt your mails?
As digital communication continues to be an integral part of conducting business, the need for email security becomes increasingly important. By using encryption when emailing, you can create the technical conditions necessary for sensitive information to remain protected. However, having a secure email requires more than just technology. It also necessitates the proper configuration of your email client and the right work practices when emailing.
At Safe Online, we have developed the email portal ShareSimple, which, unlike conventional email, creates a portal where files can be uploaded and downloaded. In this way, data is completely removed from the mail server. During the mail transfer, the mail is protected with TLS 1.2 and 2048-bit encryption.
Learn more
Sebastian Allerelli
Founder & COO at Safe Online
Sebastian is the co-founder and COO of Safe Online, where he focuses on automating processes and developing innovative solutions within data protection and compliance. With a background from Copenhagen Business Academy and experience within identity and access management, he has a keen understanding of GDPR and data security. As a writer on Safe Online's Knowledge Hub, Sebastian shares his expertise through practical advice and in-depth analysis that help companies navigate the complex GDPR landscape. His posts combine technical insight with business understanding and provide concrete solutions for effective compliance.
