List of the Top 15 Email Encryption Software for Microsoft 365 in 2026

NeoCertified protects confidential data through our secure email application, which operates seamlessly on our adaptable Cloud-based platform. It is accessible via any web browser and integrates with Microsoft Office 365/Outlook and Gmail, while also offering dedicated mobile applications for both iPhone and Android devices. Since our inception in 2002, we have been delivering secure mail solutions that comply with federal standards, enabling organizations to send and receive secure emails from any web browser or mobile platform. Our service is compatible with all email providers, ensuring that businesses enjoy the flexibility and robust security they require for their communications. Additionally, our commitment to constant innovation guarantees that we meet the evolving needs of our clients in an increasingly digital world.

PreVeil transforms the landscape of end-to-end encryption by providing exceptional security for organizations' emails and files, shielding them from various threats such as phishing, spoofing, and business email compromise. The platform prioritizes user-friendliness, making it accessible for employees while remaining simple for administrators to manage. By implementing PreVeil, companies can utilize a secure and easy-to-navigate encrypted email and cloud storage solution that protects vital communications and documents effectively. With its advanced end-to-end encryption, PreVeil guarantees that data is safeguarded at every stage of its lifecycle. Moreover, the platform includes a feature known as the “Trusted Community,” which promotes secure interactions among employees, contractors, vendors, and other external entities. This groundbreaking addition enables users to exchange sensitive materials with confidence, assured that they are shielded from prevalent cyber threats. Ultimately, PreVeil not only enhances security for organizations but also cultivates a cooperative atmosphere that encourages teamwork and collaboration among its users. By prioritizing both safety and usability, PreVeil addresses the evolving needs of modern businesses.

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.

Senders maintain complete control by restricting what recipients can do with content, including the ability to print, share, or download, and they can revoke access whenever needed. Identillect remains responsive to regulatory changes through continuous research, allowing you to concentrate on your primary responsibilities. The platform is designed to be easily navigable for both senders and recipients, who do not need to register or subscribe to receive messages. Enhance your secure communications effortlessly through Outlook by utilizing Identillect’s advanced vCard technology. You have the flexibility to set your desired security level and implement company-wide policies that limit recipient permissions across your network, ensuring consistent protection. This add-in simplifies message security and responses while you're on the go, offering all the functionalities of Delivery Trust® – Web Only. Its user-friendly interface guarantees a smooth implementation process across your organization without the burden of a steep learning curve. Additionally, the add-in provides full access to all features of DELIVERY TRUST® – Web Only, thereby guaranteeing extensive security for every communication you send. By leveraging these capabilities, you can confidently safeguard sensitive information and maintain control over your communications at all times.

MDaemon Technologies has created the email threat detection technology utilized by Security Gateway. For over two decades, this trailblazer in the email industry has been safeguarding email servers from various dangers like viruses, spam, and phishing. Organizations rely on their expertise to maintain the security of their email exchanges. Their protection extends to all email platforms, such as Microsoft Exchange and Office 365, among others. With a dedicated team of email security experts, Security Gateway simplifies the management of your organization’s email security needs. Utilizing the latest advancements in email threat detection technology and policy enforcement tools, Security Gateway ensures that legitimate emails are efficiently delivered to and from your users. Additionally, the cloud service offered by Security Gateway is straightforward to implement, allowing you to concentrate on other vital responsibilities. To learn more about the functionalities of Security Gateway, be sure to check out this informative video.

Efficiently categorize deceptive emails while proactively detecting and isolating questionable URLs. Utilizing big data analytics enables precise classification of mass email communications. This comprehensive solution integrates seamlessly with both Google Workspace and Microsoft 365. Spambrella's Email Security and User Awareness Training technology is trusted by numerous leading security-focused organizations worldwide, spanning various industries and regions. By partnering with Spambrella, you can consolidate your email security strategies and user training initiatives on an international scale. Acting as your dedicated email security team, Spambrella ensures a smooth transition while possessing the technical know-how of other major providers like Symantec.cloud, Mimecast, and MxLogic. To safeguard your email users from potential threats, reach out today to arrange a demonstration with our cybersecurity specialists and enhance your email protection strategy.

LuxSci is dedicated to ensuring the safety of personal information while effectively safeguarding global communications. The company focuses on delivering web and email communication services that adhere to HIPAA regulations. LuxSci develops highly secure and tailored enterprise-level environments and solutions, empowering businesses to meet their unique operational and security requirements effectively. Among the offerings are services like Secure Email, Web, and Forms, which are designed to enhance data protection and facilitate compliance. In addition, LuxSci continuously evolves its services to adapt to the changing landscape of digital security.

Mailock secure email offers companies a reliable method for sharing sensitive information with clients while protecting their data from potential breaches. It employs advanced encryption technology combined with multi-factor identity verification, ensuring that confidential emails are effectively safeguarded against cyber threats, thereby keeping customer data secure. Users can effortlessly create secure emails from their desktop or browser, utilizing specific rules and keywords that activate encryption protocols. Furthermore, they have the ability to set up authentication barriers that verify the identities of recipients, guaranteeing that only those who are authorized can access the sensitive information. Each message is accompanied by comprehensive audit trails, allowing users to track recipient engagement through instant read receipts. Recipients are also given the option to encrypt their replies at no additional charge. This service not only promotes secure communication but also empowers clients to interact with your business in a safe manner. Additionally, it streamlines the delivery of confidential documents to clients in bulk through automated secure email processes, enhancing operational efficiency. Ultimately, Mailock fortifies the integrity and confidentiality of business communications, cultivating trust and security in all client interactions while ensuring compliance with data protection regulations.

Hushmail enhances the security of your emails, web forms, and electronic signatures to ensure client confidentiality. Known for its security and HIPAA compliance, it has garnered trust among healthcare professionals globally. The setup process is straightforward, allowing you to send your first encrypted email instantly and create a secure online intake form in just a few minutes. Hushmail functions like standard email accounts while incorporating advanced security features to safeguard your information. You can send and receive encrypted messages through both web and iPhone applications. Additionally, your account can be accessed via Outlook, Apple Mail, or Android devices, making it convenient to manage your communications. Transitioning your forms to an online platform takes mere minutes with Hush™ Secure Forms, which serves as a secure substitute for traditional paper forms and offers instant online signing capabilities for your most critical documents. Switching from traditional pen and paper to e-signatures has never been simpler or more efficient. This streamlined process enhances productivity and ensures that client data remains protected at all times.

Echoworx stands out as a fully-managed SaaS email encryption solution by providing eight distinct methods for sending secure emails, accommodating nine different authentication methods, and offering support in up to 28 languages, which allows for safe communication across various devices and locations. Among its key attributes are multiple secure mail delivery options, including Web Portal, S/MIME, PGP, Secure PDF, Certificate Encryption, Secure Attachments (such as PDF, Office, and ZIP), as well as TLS with fallback. Additionally, it features a wide array of authentication methods like Full OAuth Access, Self-Registration, SMS, Shared Secret Passphrase, SSO, System-Generated Verification Codes, Passwordless options, and Multi-Factor Authentication (MFA) for enhanced security. Users can also benefit from a complimentary full proof of concept trial (POC) and 24/7 access to expert support, ensuring that assistance is always available when needed. The platform allows for seamless end-to-end deployment and includes options for recalling and tracking secure emails. With extensive branding capabilities and self-service account management, Echoworx is committed to providing a comprehensive and user-friendly email encryption experience. Ultimately, this combination of features empowers organizations to enhance their communication security effortlessly.

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.

While you may think you are being cautious by refraining from sending sensitive emails, isn't it worrisome that your email service provider might have a backdoor allowing them to access your communications? They hold the power to share your messages with third parties whenever they choose, as they establish the protocols and take advantage of any weaknesses in their system. Have you reflected on the information that a single online purchase receipt could expose about your life? Such details could unveil your shopping habits, financial standing, preferred payment methods, home address, and the technology you use, among other insights. This reality is rather alarming, isn't it? Sadly, many businesses and scammers are already taking advantage of this data. Every tiny detail about you is invaluable to outside entities, who will leverage it to gain insights into your habits, sway your buying choices, and in some extreme cases, even impersonate you online. If you are under the impression that your email service is entirely secure, it may be beneficial to perform a quick online search; you'll likely uncover that leading email providers have experienced significant security breaches. Are you still feeling secure about your privacy? Fortunately, a simple and effective privacy solution is available that can protect your emails regardless of where they are sent or received, ultimately providing you with the reassurance you need in today's digital landscape. This peace of mind can help to alleviate the anxiety that comes with sharing your personal information online.

Advanced Email Security Solutions. Our platform integrates a robust layer of human security that employs sophisticated encryption, analytics technologies, and contextual machine learning to thwart data breaches initiated by users, safeguard sensitive information (Egress Guard), and pinpoint vulnerabilities within your email infrastructure. In order to empower employees to make informed security choices, we leverage cutting-edge DLP technology alongside contextual machine learning capabilities. This approach effectively identifies and mitigates both accidental and deliberate data leaks, while ensuring that sensitive information is only shared with the appropriate recipients. Our user-friendly plug-in simplifies the process of email encryption, making it accessible for all users. Furthermore, we automate protection measures in alignment with your established security policies. Our intelligent system evaluates the actual threat level of potential breaches by managing data sharing, ensuring that optimal security and control are consistently maintained. Additionally, our eDiscovery software streamlines analytics and reporting processes across your email network, saving valuable time and resources. With our comprehensive solutions, organizations can enhance their email security while fostering a culture of awareness among employees.

As a leader in the field of information logistics, we enable businesses around the world to communicate effortlessly. This capability is supported by our cutting-edge infrastructure, unique technology, and outstanding customer service. The efficiency and security of your data exchange play a crucial role in your overall operational performance. Are you ready to take the leap with Retarus? A business's success is significantly influenced by agile and secure communication systems that facilitate their digital and automated workflows. From sending newsletters and order confirmations to managing password resets and status updates, the swift delivery of transactional emails greatly enhances the customer experience. Retarus provides connectivity to 99% of all mobile networks, effectively putting nearly everyone on the globe within your reach in a quick and reliable manner. Delve into our case studies to find out how our enterprise SMS services can elevate your customer interactions. You can transmit personalized messages seamlessly, even to large distribution lists, via email, fax, or SMS—everything managed through a standardized and intuitive platform. Enjoy the convenience of communicating directly from your web browser, optimizing your communication processes like never before. By choosing Retarus, your business will not just maintain its connections but also flourish in a rapidly evolving digital environment, ensuring you stay ahead of the competition.

Business communication often involves sensitive data, whether it’s personal or internal, which can be at risk of unauthorized access if not properly protected. To facilitate secure and reliable email interactions, consider employing Hornetsecurity's Email Encryption system for enhanced communication integrity. This service automatically encrypts outgoing emails using reliable technologies like PGP, S/MIME, or TLS, depending on the established policies and the availability of required certificates, with no extra steps needed from the user. When the sender's public key is available, their messages are effortlessly decrypted and forwarded to the designated recipient. In light of strict compliance requirements, it has become essential to emphasize the importance of data encryption. In the business realm, a significant portion of sensitive information and file exchanges happens via email, making it crucial to safeguard these transmission channels to protect vital data. By adopting strong encryption protocols, companies can markedly mitigate the chances of data breaches and bolster overall information security. This not only protects sensitive information but also fosters trust among clients and stakeholders, reinforcing the organization's commitment to data protection.