As of May 2026, there are 17 SaaS companies in Email Encryption Software. They have combined revenues of $207.9M and employ 1.5K people. They have raised $15.8M and serve 1.2K customers combined.
Email Encryption Software is designed to protect sensitive information transmitted via email by using cryptographic methods. This software ensures that the content of emails and their attachments cannot be accessed or read by unauthorized individuals. By transforming email messages into ciphertext, it secures communications across various sectors, including healthcare, finance, and legal, where privacy is paramount. The primary use cases for this software include safeguarding confidential information during transmission, ensuring compliance with regulatory standards such as GDPR and HIPAA, and maintaining the integrity and authenticity of communications. Common features often include end-to-end encryption, digital signatures, user authentication, and the ability to manage encryption keys effectively. Typically, buyers of email encryption software may come from IT departments, compliance teams, and legal firms, who prioritize securing their communications and protecting sensitive data.
Sorting: Highest -> Lowest
Showing 10 of 17 companies ranked by annual revenue.
Geneva, Geneve, Switzerland
Developer of an online platform designed to provide a free web-based encrypted email service. The company's platform uses client-side encryption to protect emails and user data, enabling clients to get end-to-end encrypted email services anytime.
Geneva, Switzerland
ProtonMail was founded in 2013 by scientists who met at CERN and were drawn together by a shared vision of a more secure and private Internet. Since then, ProtonMail has evolved into a global effort to protect civil liberties and build a more secure Internet, with team members also hailing from Caltech, Harvard, ETH Zurich and many other research institutions.
The Hague, Netherlands
StartMail is a secure email service that protects your privacy. It was built by the people behind Startpage, the world’s first private search engine.
San Francisco, California, United States
Paubox is the easiest way to send and receive HIPAA compliant email. No software to download, no portals to login to, just write and send emails as normal from any device
Toronto, Ontario, Canada
Echoworx protects the privacy of people and businesses throughout the world by making email data protection easier. Our scalable, easy to use, and configurable cloud security and email encryption solutions, have been adopted by the top and best in the business across more than 30 countries. Our next level email encryption protection is offered as a completely turn-key, cloud-based managed service, with a passionate hands-on expert staff to help transform communication chaos into order for organizations who understand — it pays to be secure.
Las Vegas, Nevada, United States
Trustifi is a software-as-a-service (SaaS) company offering a patented postmarked email system that encrypts, tracks, and is the first federally-accepted method of sending legal documents online
Paris, France
Developer of a payment securing application designed to facilitate and secure online payments through emails and SMS. The company's platform offers universal secure payment links that convert hypertext links into digital payment channels while making emails and SMS encrypted, enabling professionals, companies and local authorities to trigger secure payments by credit card in one click from an email or SMS and receive funds directly from the bank account without delay, without intermediaries or commissions pay.
St Albans, England, United Kingdom
Provider of an email and document encryption platform created to secure everyone's communication. The company's document encryption platform designed for organizations and enterprises with data protection requirements that vary by location, both of organizational entities and customer location, enabling users to secures their data for emails and document from unauthorized viewers.
Greenville, South Carolina, United States
Provider of cloud-based B2B email security, compliance and encryption products created to offer email security, management and hosting services The company's email security, compliance and encryption product Mailprotector, include inbound and outbound email protection, email backup and disaster recovery, email archiving, end-to-end encryption and business-class hosted email product, including enhanced MS Exchange, enabling businesses, government agencies and non-profits to get a email filtering system.
Singapore, Singapore
Dmail Network offers encrypted emails, consolidated notifications, and precise marketing services across multiple chains & apps, catering to users, developers, and marketers.
- Must provide end-to-end encryption capabilities for email content and attachments - Should support compliance with major data protection regulations - Must include features for digital signatures and user authentication - Should be compatible with major email clients and platforms - Not just encryption; must also offer secure key management solutions - Should allow for policy-based encryption to automate security processes - Must provide usability features for end-users to facilitate adoption
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