List of the Top 10 Email Encryption Software for Mac in 2025

Mailfence is a provider of encrypted email services that employs OpenPGP-based encryption along with digital signatures for enhanced security. It boasts an array of features that facilitate collaboration while ensuring both security and convenience are maintained. Users can securely store and edit documents through Mailfence Document, and sharing these documents with teammates is as simple as a single button press. Additionally, the Mailfence Calendar helps users manage tasks, meetings, events, and other vital information efficiently. The Contacts feature allows for the storage of contact information and the creation of mailing lists, which enhances overall productivity. Designed with full interoperability in mind, Mailfence can be synced seamlessly with various services. Furthermore, it offers fully customizable whitelabel versions of its interface, catering to diverse branding needs. In a commitment to online privacy, Mailfence contributes 15% of its PRO subscription revenue to organizations like IFF or EDRI. This dedication to supporting privacy advocacy is a testament to Mailfence's values.

Proton Mail was established in Switzerland, where all of our servers are situated, ensuring that user data is safeguarded by stringent Swiss privacy regulations. Every email sent is automatically secured through end-to-end encryption, meaning we, too, are unable to read or decrypt your messages. As a result, your encrypted emails are protected from being shared with any external parties. To set up your secure email account, there is no requirement to disclose personal information, and we do not maintain IP logs that could potentially identify your anonymous account. The importance of your privacy is our top priority. We believe that email privacy should be a right accessible to everyone, which is why our code is open-source and basic accounts for Proton Mail are offered free of charge. We encourage users to support our initiative by donating or choosing to upgrade to a premium account. Proton Mail is designed to work seamlessly across all devices without the necessity of additional software installation. For those running a business, Proton Mail Business offers the ability to maintain your professional email address, allowing you to send and receive encrypted communications both internally and externally. Our commitment to privacy and security remains unwavering as we strive to empower users with safe communication options.

Spike consolidates your entire workspace into a single Inbox that encompasses email, chat, calendars, calls, team collaboration, and tasks, effectively streamlining your workflow by eliminating the need to toggle between multiple applications. By combining conventional email with instant messaging, Spike's conversational email feature reduces the chaos of lengthy email threads. With real-time communication and live collaboration capabilities, users can enjoy enhanced interactions that foster a more personable communication atmosphere. Available on iOS, Android, Mac, and Windows, Spike ensures that you can stay connected and organized no matter what device you are using. This integration of features is designed to improve productivity and simplify the way you manage your professional communications.

Secure email communication is a fundamental right for everyone, and Tutanota emerges as the leading choice, crafted with user-friendliness and privacy as its core principles. By creating a free account, you can take charge of your inbox once more. With state-of-the-art features such as end-to-end encryption and two-factor authentication, the level of email security is unmatched. Its integrated encryption guarantees that your mailbox remains exclusively yours, safeguarding your data from unauthorized access and interpretation. Being open source not only fosters transparency but also allows security experts to review the protective code, thereby bolstering confidence in its safety. Our Android app operates independently of Google services, establishing Tutanota as the top open source email solution. Available on both iOS and Android platforms, your secure communications are perpetually accessible. Our fast web client and extensive applications ensure a smooth process for sending encrypted emails. We are committed to your email privacy by offering an ad-free service, relentlessly striving to enhance encryption so you can focus on what is most important. With a clean and simplistic interface complemented by customizable features, Tutanota is resolutely focused on fulfilling your email needs effectively, ensuring a secure and user-centered experience. This commitment to privacy and usability sets Tutanota apart in the crowded email landscape.

Introducing Canary, your new AI assistant for email management that not only sends your messages but also identifies important ones, filters out spam, and offers a variety of additional features. With Canary, you can enhance your email experience and keep your inbox organized like never before!

RMail®, an e-security solution offered by RPost®, emerged as a prominent global leader in the year 2000. Specializing in user-friendly email encryption, RMail provides services that ensure privacy, compliance, legal delivery proof, secure file sharing, email rights management, protection against email impostors, and overall email encryption. The transmission security services provided by RMail are particularly beneficial for professionals and organizations tasked with sending sensitive or consumer-regulated data. These offerings extend beyond the capabilities of standard email and encompass: (a) a simplified and more automated email encryption process for enhanced privacy compliance; (b) a reliable proof record detailing the sender, recipient, and content of each email; (c) confidence regarding the delivery and open status of critical emails that are time-sensitive; (d) a timestamped confirmation of content delivery; and (e) the ability to securely share large files, making RMail an indispensable tool for modern communication needs.

A quarter of the leading 100 German firms with the highest revenues opt for Zertificon's solutions. Our Z1 SecureMail Gateway simplifies Enterprise Email Encryption, ensuring secure communication with anyone, anytime. The entire organization can seamlessly encrypt, decrypt, manage, and verify email signatures in the background. Maintenance for the Z1 SecureMail Gateway is minimal, and the user-friendly, browser-based admin interface requires no specialized skills to operate. Automatic key management and centralized enforcement of security policies further enhance its efficiency. Quick and easy integration into either cloud or on-premises email systems means that your business operations remain uninterrupted. There is no need for employee training, and the experience for recipients is smooth and hassle-free. The Z1 SecureMail Gateway allows for centralized customization of encryption, minimizing the risk of human error. With this solution, you can swiftly achieve compliance and ensure the highest security standards. Additionally, you retain ownership of your encryption keys and benefit from German-engineered data sovereignty, free from backdoors, which enhances your organization’s trustworthiness and security posture. This comprehensive approach not only safeguards communications but also empowers your organization to focus on its core activities without security concerns.

EncryptTitan is a comprehensive encryption solution designed specifically for Managed Service Providers (MSPs) and large enterprises, enabling users to exchange information securely through email. This innovative platform equips organizations with the necessary tools to adhere to both federal and state privacy regulations, all while ensuring the protection of their business assets. There is no need for on-site hardware, allowing for unlimited encrypted email transmission through a secure platform that offers ultimate scalability. Furthermore, EncryptTitan includes pre-configured Data Loss Prevention (DLP) policies and settings that automatically encrypt messages by scanning for specific content within the body or attachments. Users can also utilize the Outlook plug-in in conjunction with our keyword-based encryption deployment, giving them the flexibility to choose which emails require encryption through the add-in. By employing EncryptTitan, organizations can effectively safeguard sensitive information and mitigate the risks of litigation and negative publicity, which can erode customer trust. Additionally, this solution empowers businesses to maintain compliance and enhance their overall security posture. Schedule your demo today to discover how EncryptTitan can transform your email security practices.

When it comes to efficiently and securely sending confidential files or emails to customers, partners, or employees outside the safe boundaries of your organization, adhering to best practices is vital. The CNIL strongly advises companies to "utilize data encryption during transfers" and "ensure that employees are educated about the risks involved." In today’s landscape of data protection, implementing encryption is not merely advisable but essential. Tools such as BlueFiles provide specialized encryption to safeguard data, making it inaccessible to anyone other than the intended recipient. BlueFiles enhances the reliability of digital data transfers by incorporating integrity checks, ensuring complete confidentiality, allowing remote file control, and offering tracking capabilities. By utilizing these advanced tools, organizations can boost efficiency, streamline operations, and cut costs, all while maintaining secure communications over the Internet and safeguarding sensitive information. Additionally, compliance with GDPR regulations necessitates that organizations actively encrypt personal data flows to prevent facing severe penalties. Therefore, adopting these measures not only fortifies data protection but also ensures alignment with regulatory requirements, fostering a more secure digital environment. Ultimately, this proactive approach to data security can significantly enhance an organization's reputation and trustworthiness.

Aspida Mail was created with a focus on user-friendliness, allowing you to continue your daily business activities seamlessly. Its installation is simple and works with any device that has IMAP capabilities. Furthermore, Aspida Mail offers encrypted email services that meet HIPAA compliance standards. This blend of functionalities not only enhances security but also ensures effective communication, making it an excellent option for individuals and organizations in need of reliable email services.