Best Email Encryption Software

Email encryption technology is used to transform and secure information travelling through an email server. These tools ensure data-in-transit remains secure until the authorized party is identified. Email encryption can be useful in any industry, but is a requirement for others. Medical records and government data are both examples of information that must be encrypted before being shared.

Email encryption tools use a variety of encryption methods to mask information, but they all provide some level of encryption capabilities to prevent unauthorized access to sensitive business information. Transport-level-encryption will ensure no eavesdropping occurs and that information remains private until delivered to the target network. End-to-end encryption adds further factors keep data encrypted longer. For example, an email can be encrypted from the point of creation and remain encrypted until only approved devices directly associated with the target user.

Some secure email gateway software possesses encryption capabilities, but those tools also have additional features for comprehensive spam filtering, malware protection and information archiving.

To qualify for inclusion in the Email Encryption category, a product must:

  • Encrypt content being delivered via email
  • Require some level of authentication for access
  • Facilitate industry-related communication compliance
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    Tutanota is the end-to-end encrypted mail client that enables users to communicate securely.

    Paubox is the easiest way to send and receive HIPAA compliant email. No other solution makes secure email so simple to use. Paubox is the only provider with Zero-Step Encryption on ALL sent email. Senders can just write and send emails as normal from any device and Paubox seamlessly encrypts the message from end-to-end, without the need for portals, plug-ins, or keywords. It's just as easy for recipients to view secure email sent to them. No keys to exchange, no passwords to remember, apps to

    NeoCertified provides email encryption for businesses and individuals alike. With a product that encompasses all industries and verticals -- healthcare, finance, legal, education, non-profit -- you can be sure that all of your documents, sensitive information, and messages are protected through the entire process.

    With Proofpoint Email Encryption, messages and attachments are automatically encrypted with complete transparency. Users don't need to manually encrypt their email to send and receive messages securely—it just happens in the background. Email Encryption simplifies secure communications and leaves you in control.

    Send secure files to any email address. Stop wasting time inviting clients, setting up shared folders, or configuring permissions. Files automatically organize into client folders. Receive secure messages and files from clients without asking them to create any new accounts. Showcase your branding on your custom upload page. Increase your visibility with clients by letting them use the free Encyro account to communicate securely with others. Keep customer data secure and comply with HIPAA, G

    ZixEncrypt offers policy-based email encryption and email data loss prevention to make securing your sensitive email communication easy. ZixEncrypt scans the content of all your outbound email and automatically encrypts based on policies you define. It ensures compliance of your email communication without requiring special training or procedures for your employees, and is available as a physical or virtual appliance, and as a hosted solution

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    Egress helps enterprises protect unstructured data to meet compliance requirements and drive business productivity. The company’s AI-powered platform enables users to control and secure the data they share. The award-winning platform provides email and document classification, accidental send prevention, email and file protection, secure online collaboration and audit and compliance reporting. Trusted by enterprise organisations and governments around the globe, Egress offers a seamless user

    Virtru puts you in charge of how your digital information is shared. Combining control, convenience, and simplicity, Virtru makes it easy to keep your private communications private.

    VMware Boxer is touted to have enterprise-level security features packaged in a consumer-grade user experience.

    Symantec Desktop Email Encryption offers end-to-end email encryption for laptops and desktops.

    Hop is now Spike! 😎 Spike is the world’s first conversational email app. We’re upgrading the way businesses work, saving you and your team time, sanity, and a lot of headaches. Our goal is simple: bring all of your communication -- your emails, chats, calls, team collaborations, tasks, everything -- to one place. It’s what your team has been looking for in a productivity and messaging app, but easier, and all from your inbox. Spike works on top of any existing email (O365, G suite, and IMAP

    Ensure sensitive materials stay protected by adding end-to-end email encryption to Office 365.

    Zix is an email data protection that helps secure data via email, protecting customer and trust they have for your business.

    modusCloud is a cloud based email security solution designed to protect against spam, phishing, advanced targeted attacks, malicious attachments, data loss and drive by URLs.

    DeliverySlip enables email encryption & file security with your email in the Cloud. DeliverySlip works with your existing cloud email and data loss prevention (DLP) for secure delivery. We offer a free and easy cloud migration program from your legacy secure email gateways and on premise email encryption.

    FlowCrypt is a Chrome extension for Gmail encryption.

    Mail Express lets employees securely share large files with internal and external recipients without worrying about workflow disruptions, file-size restrictions, or resource restraints.

    gpg4o is IT-Security that helps protect your sensitive mail content in Microsoft Outlook 2010/2013/2016 and is suitable for both private and enterprise usage. gpg4o is based on OpenPGP encryption by using GnuPG(GPG) and is compatible to other OpenPGP based implementations like enigmail, Symantec Encryption (former PGP Desktop) and Symantec Encryption Gateway (former PGP Universal), GPGMail, KMAil and others.

    SAFEmail enables you to organise and control a wide range of data from unclassified to highly-classified quickly and easily, and allows you to add elements of service such as checking the recipient’s clearance level before sending.

    Secure Email System is an amazing new solution that helps every IT Director in an organization to easily share protected email with anyone on any device with ease of use Secure emailing system uses the latest technology to keep your emails safe from malicious security incidents, so you will no longer have to worry about sensitive information being shared with unauthorized individuals, or anything slipping through your existing firewall or anti-virus software.

    SenditCertified provides a patented menu of cloud-based services, enabling subscribers to send and receive secure email and attachments, store large files, and complete signature-required transactions securely.

    StartMail offers a secure way to send emails, while maintaining a high standard of privacy. The intended purpose is to provide their users with maximum control and visibility, without having to trade in their private information.

    Vera is a next-generation data security company enabling businesses of all sizes to secure, track and share any kind of data, no matter where it's stored or located. With robust policy enforcement, strong encryption and strict access controls, Vera's data-centric security solution enables employees to collaborate freely while ensuring the highest levels of security, visibility and control. For more information, visit:

    WeCloud Email Security is a complete solution for security, validation and management of e-mail that works on all platforms.

    XFA Mail is a weightless security email plug-in that offers the strongest available encryption technology which protects any form of email communication or attachment from being viewed by unauthorized parties.

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