Best Email Encryption Software for Windows of 2025

Mailfence is an encrypted email provider that uses OpenPGP-based encryption and digital signatures. Mailfence offers a variety of features that allow for collaboration without compromising security or convenience. Mailfence documents allows you to securely store and edit documents. You can also share documents with your team by pressing a button. Mailfence calendar will help you keep track of all your tasks, meetings, events, and other important information. Mailfence contacts will save your contacts and allow you to create mailing lists to maximize efficiency. Mailfence was designed to be fully interoperable. This means that you can sync Mailfence with any service. Mailfence offers fully customizable whitelabel versions for its Mailfence interface. Mailfence donates 15% from PRO subscriptions to IFF or EDRI to support the fight for Online privacy.

Proton Mail was founded in Switzerland, and all of our servers are located there. All user data is protected under strict Swiss privacy laws. All emails are encrypted automatically using end-to-end encryption. This means that even we cannot read or decrypt your emails. Your encrypted emails cannot therefore be shared with any third parties. To create your secure email account, you don't need to provide any personal information. We do not store IP logs that can be linked to your anonymous account. Your privacy is paramount. Email privacy should be accessible to everyone, according to us. Our code is open-source and basic Proton Mail accounts come free. Support the project by donating to it or upgrading to a paid account. Proton Mail is compatible with all devices without the need for software installation. Proton Mail Business allows you to keep your business email address. You can send and receive encrypted email both within and outside your organization.

Spike integrates all your workspace into one Inbox. This includes email, chat and calendar, calls, team collaboration, tasks, calls, and even calls. You can now do your work in one feed so you don't have to switch between apps. Spike's conversational email merges traditional email with instant messaging, eliminating cluttered email threads. Live collaboration and real-time communication allow for better interactions and a more human communication environment. Spike is available for iOS, Android, Mac and Windows.

Everyone deserves secure email communication, and Tutanota stands as the most robust option available, designed for ease of use while prioritizing privacy. By signing up for free, you can regain control over your inbox. With features like end-to-end encryption and two-factor authentication, the security of your emails is unprecedented. The integrated encryption ensures that your mailbox is solely yours, preventing anyone from accessing or deciphering your information. Being open source allows security professionals to audit the code that safeguards your emails, enhancing trust. Our Android application is free from Google services, positioning Tutanota as the premier open source email platform. Accessible via both iOS and Android, your secure messages are always at your fingertips. Our swift web client and comprehensive applications ensure that sending encrypted emails is a seamless experience. We prioritize your email safety by providing a service free from intrusive advertisements, continuously working to deliver encryption that allows you to concentrate on what truly matters. From our straightforward and minimalistic interface to customizable options, Tutanota is dedicated to meeting your email requirements effectively.

Senders retain full authority by limiting the recipients' abilities to print, share, or download content, with the option to retract access at any moment. Identillect adapts to changes in regulations, conducting ongoing research so that you can stay focused on your core tasks. The system is user-friendly for both senders and recipients, requiring no registration or subscription from those receiving messages. Utilize Identillect’s innovative vCard technology to enhance your secure communications seamlessly through Outlook. You can set your preferred security level and enforce company-wide policies that restrict recipient permissions across the network. This add-in provides access to all features of Delivery Trust® – Web Only, making it easy to secure your messages and responses while on the move. Thanks to its intuitive design, there is no steep learning curve and implementation can be done smoothly throughout the organization. The add-in also grants full access to all features of DELIVERY TRUST® – Web Only, ensuring comprehensive protection for your communications.

Security Gateway's email threat detection technology was developed by MDaemon Technologies. This email industry pioneer has been protecting email servers against viruses, spam, phishing and other threats for more than 20 years. Our expertise is trusted by companies to keep their email communications safe. We protect all email platforms, including Microsoft Exchange, Office 365, and other. Our team of email security specialists will take the hassle out of managing your company’s email security. Security Gateway employs the most up-to-date email threat detection technology and policy enforcement tools in order to ensure good emails flow to and from your users. Security Gateway cloud service is easy to deploy, so you can focus on other important tasks. Check out this video to see some of the Security Gateway features.

Email, meet AI. Canary can send your emails, prioritize what is important, silence spam, and much more. Say hello to your Inbox Copilot!

RMail®, the e-security platform from RPost®, is a global leader in 2000. RMail is a specialist in elegantly simple email encryption for privacy, compliance, legal e–delivery proof secure file sharing, email rights management, email impostor protection and email encryption. RMail's transmission security services are often used by businesspeople and business systems that need to send sensitive or consumer-regulated information. These RMail services can be used for messages that require additional functionality beyond standard email. They include (a) an easier-to-use and more automated email encryption to ensure privacy compliance; (b) a verifiable proof record of who sent what email to whom; (c) assurance and peaceof mind in relation to delivery and open status email of important and time-deadline emails, (d) need to have a timestamped proof that content was delivered; (f) the need to securely share large files.

Safeguard the confidentiality of your electronic communications by utilizing gpg4o®, an innovative solution crafted by Giegerich & Partner, which leverages OpenPGP—one of the most trusted and widely adopted encryption methods globally. Designed for both individual and corporate users, gpg4o® ensures that your emails remain private through robust encryption capabilities. This seamless integration with Microsoft® Outlook® 2010, 2013, 2016, and 2019 allows you to enhance your email security effortlessly. The installation process is straightforward, and the user-friendly interface makes it easy to maintain email privacy. Additionally, with ongoing product updates, gpg4o® continuously provides the latest features to bolster security and improve overall user experience, ensuring that your sensitive information is always protected. In a world where email breaches are common, taking proactive measures to secure your correspondence is more important than ever.

25% of the top 100 German companies with the highest turnover choose Zertificon's solutions. We make Enterprise Email Encryption effortless for secure communications with anyone, anywhere, with our Z1 SecureMail Gateway solution. Your entire organization encrypts and decrypts, just as well manages and verifies email signatures smoothly in the background. Z1 SecureMail Gateway requires very little maintenance. Furthermore, the browser-based admin interface does not call for any special skills. Keys are managed automatically, and security policies are centrally enforced. Integration into your cloud or on-premises email infrastructure is quick and straightforward. Your business and workflows are uninterrupted – no employee training is required, and recipients get a frictionless experience. Encryption is centrally customizable and proofed against human error with Z1 SecureMail Gateway. You can quickly establish and maintain compliance and the highest levels of security. You also own your encryption keys and get German-engineered data sovereignty with no backdoors.

Cryptshare is an innovation that protects your information when it is most at risk. Everybody needs to communicate data and messages in their daily work. We face many limitations once data is in transit. 1. Data protection 2. Limitations on file size These problems can be solved with our solution in an efficient and user-friendly manner. It also offers many other benefits, including: *Detailed audit trail *Compliance to central data protection regulations *Excellent potential to automate business communication It is also affordable, simple to implement, and accessible from any device with a web browser. Cryptshare is compliant with ISO 27001, GDPR. Cryptshare protects your information throughout the process.

EncryptTitan, a complete encryption system for MSPs & Enterprises, allows users to securely exchange information via email. EncryptTitan gives organizations the tools to comply with federal and state privacy regulations while protecting their business. No on site hardware required. Send unlimited encrypted email using a secure solution. Ultimate scalability. EncryptTitan has pre-built DLP policies and settings that will look for regular content in the message body or attachment to automatically encrypt messages. The outlook plug in can be used with our keyword encryption deployment, where the user can select which emails to be encrypted for the add in. EncryptTitan helps the safeguarding of private information & avoidance of litigation & bad press which can impact customer trust. Book your demo today and learn more about EncryptTitan.

Intelligent Email Security. Our human layer security platform uses powerful encryption and analytics technologies, contextual machine learning, and powerful encryption to prevent human-activated data breach, protect sensitive data (Egress Guard), and allow you to identify areas at risk in your email network. To help employees make smart security decisions, we use advanced DLP technology and contextual machine learning. This includes detecting and stopping accidental and intentional data leaks and ensuring that sensitive data is protected when it's shared with the right recipients. Our plug-in makes email encryption simple. We also automate protection based upon your security policies. Our intelligent technology can determine the actual threat of a breach by sharing data to ensure that the right security and control are always in place. Our eDiscovery software provides time-saving analytics and reporting across your email network.

When it comes to swiftly sending a confidential file or email to a customer, partner, or employee outside the secure confines of your organization, it’s crucial to follow best practices. The CNIL strongly recommends that businesses "utilize data encryption during transfers" and "ensure staff are trained on the associated risks." Implementing data encryption is essential in today's data protection landscape. With specialized encryption tools like BlueFiles, organizations can secure their data, rendering it unreadable to anyone except the intended recipient. BlueFiles ensures reliability in your digital data transfers by offering integrity checks, complete confidentiality, remote file control, and tracking capabilities. By leveraging such tools, companies can enhance efficiency, simplify processes, and reduce costs, all while confidently communicating over the Internet without the fear of compromising sensitive information. Furthermore, compliance with GDPR mandates that organizations actively encrypt personal data flows to avoid facing significant penalties. Thus, adopting these practices not only protects data but also aligns with regulatory expectations.

Aspida Mail was designed to prioritize ease of use, ensuring that you can maintain your regular business operations without interruption. The setup process for Aspida Mail is straightforward and compatible with any device that supports IMAP. Additionally, Aspida Mail provides encrypted email services that comply with HIPAA regulations. This combination of features makes it an optimal choice for those seeking secure and efficient email solutions.