Best Secure Email Gateway Software for Microsoft 365

Find and compare the best Secure Email Gateway software for Microsoft 365 in 2025

Use the comparison tool below to compare the top Secure Email Gateway software for Microsoft 365 on the market. You can filter results by user reviews, pricing, features, platform, region, support options, integrations, and more.

  • 1
    NeoCertified Secure Email Reviews
    Top Pick
    NeoCertified secures sensitive information via our secure email app across our versatile Cloud-based platform. It works on any web browser through Microsoft Office 365/Outlook plug ins and Gmail integration. You can also download the iPhone + Android mobile apps directly to your mobile devices. Since 2002, we have been providing federally compliant, secure mail solutions. We have helped businesses send and get secure emails from any web browser or mobile device. NeoCertified works with all email providers, giving businesses the flexibility and guaranteed protection they need.
  • 2
    N-able Mail Assure Reviews
    Top Pick
    N-able Mail Assure, a cloud-based email security system, provides advanced threat protection for both inbound and outbound emails using collective threat intelligence, long-term email archive, and 24/7 email continuity. The service offers multi-tenant web-interfaces with predefined settings, reporting and views that allow for control and visibility over all email flows. N-able Mail Assure's proprietary technology uses input from large volumes of email data to feed the Intelligent Protection and Filtering engine. This, combined with real-time pattern threat detection leveraging a variety if filtering technologies, helps protect against spam, viruses and phishing attacks as well as impersonation, malware and other email-borne threats.
  • 3
    Microsoft Exchange Reviews
    Enhance your productivity with a business-class email and calendaring solution. With Exchange, you can effectively collaborate on essential documents while enjoying a streamlined inbox that highlights significant messages and adjusts to your individual work habits, allowing you to accomplish tasks more efficiently. Benefit from a customized inbox filled with useful features, along with a more structured method for managing and engaging with your emails. Enhanced search functions deliver quicker and more comprehensive results, and the inclusion of Add-ins provides powerful customization options that link you to contemporary services and internal business applications. Additionally, optimize your schedule with a sophisticated calendaring system that surpasses mere appointment setting, automatically capturing details from emails like flight confirmations and hotel bookings, and offering venue suggestions based on your current location. Microsoft Exchange Online serves as a robust hosted email platform designed for businesses, ensuring the protection of your data through advanced security measures. With these tools combined, you can streamline your workflow and empower your team to work more innovatively.
  • 4
    Cisco Secure Email Threat Defense Reviews
    Enhanced measures to protect your email accounts are essential, as email remains the primary vector for threats. It is crucial to broaden your security measures to identify hazardous threats and swiftly respond to and mitigate new dangers as they arise. Recognizing the malicious tactics employed in assaults on your organization is vital. By understanding the unique risks to your business and classifying the threats, you can better comprehend which aspects of your organization are most susceptible to attacks. Utilizing AI-based threat detection, various detection systems concurrently analyze different components of incoming emails. The insights gained from these evaluations ensure precise threat identification, assess business risks, and facilitate suitable response strategies. Threats may originate from a variety of channels, including phishing schemes, business email compromise, malware, and ransomware. Protect yourself against all these threats with top-tier threat intelligence, which equips you to respond promptly to any potential risks. The continuous evolution of cyber threats makes it imperative to stay ahead of attackers by implementing comprehensive security solutions.
  • 5
    SecurityGateway™ for Email Servers Reviews

    SecurityGateway™ for Email Servers

    MDaemon Technologies

    $1 per user per month
    1 Rating
    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.
  • 6
    Symantec Email Security.cloud Reviews
    Ensure the security of Microsoft Office 365, Google G Suite, and on-premises email systems by utilizing the most comprehensive email security solution available in the industry. Shield users from threats like spear phishing, credential theft, and ransomware attacks through the implementation of Email Threat Isolation. Combat pervasive email hazards such as spear phishing, ransomware, business email compromise, and spam with robust protective measures. Foil spear phishing attempts through a multi-layered defense that includes threat isolation, spam filtration, advanced email security analytics, and integrated user training and awareness programs. Defend against the latest ransomware attacks with advanced content defense strategies, sandboxing techniques, and link protection technologies that are designed to identify emerging and stealthy threats, including zero-day vulnerabilities. Counter business email compromise by employing impersonation protection, enforcing sender authentication, and implementing brand protection strategies. Enhance your brand's reputation and mitigate risks by automating the enforcement of sender authentication protocols like DMARC, DKIM, and SPF through the use of Symantec Email Fraud Protection, which addresses the practical challenges of maintaining email security effectively. By investing in these comprehensive solutions, organizations can safeguard their communications while fostering a culture of security awareness among users.
  • 7
    Spambrella Reviews

    Spambrella

    Spambrella

    $1.00
    Dynamically classify fake email. Preventively identify suspicious URLs and sandbox them. Big-data analysis can be used to accurately classify bulk mail. All this in one service that connects to Google Workspace and Microsoft 365. Spambrella's Email Security & User Awareness Training technology is used in many of the world's most successful security-conscious businesses across many continents and environments. Spambrella can help you unify your email security requirements and user awareness training needs on a global level. Spambrella is your outsourced email security team. We are able to migrate you seamlessly and have the technical expertise of all other service providers, such as Symantec.cloud, Mimecast, MxLogic. To uncover email threats to your email users, schedule a demo with our cybersecurity experts today.
  • 8
    LuxSci Reviews

    LuxSci

    Lux Scientiae

    $4 per/user/month
    LuxSci's mission is to keep personal data safe while reliably protecting the world’s communications. LuxSci specializes in providing HIPAA-compliant web and email communications services. LuxSci creates uniquely secure and customizable enterprise-grade environments and solutions that enable organizations to confidently meet their specific business and security needs at scale. Our services include Secure Email, Web, and Forms.
  • 9
    PhishProtection Reviews

    PhishProtection

    DuoCircle

    $100/month/user
    Make the smartest investment today to reduce email security threats. Get a comprehensive email security solution for small businesses at small business pricing. Cybercriminals are targeting CEOs and CFOs in every industry, as well as HR, Accounting, and HR departments. Office 365 has very limited protection options to prevent impersonations, email fraud, and phishing. You can only create so many custom transport rules to block domains and protect against employee impersonations. PhishProtection is compatible with every email server, device, and smtp service. We can protect you no matter where you are, whether you're on your phone, outlook, or any other email client. It provides the best security for both Android and iOS devices.
  • 10
    ESET PROTECT Mail Plus Reviews

    ESET PROTECT Mail Plus

    ESET

    $132 per 5 devices per year
    An extra layer of protection is implemented to prevent potential threats from reaching users within the network. This system is specifically designed to safeguard email communications, which are often the most susceptible to attacks. ESET boasts a genuine 64-bit product that supports clustering, guaranteeing that speed remains optimal for organizations of all sizes. ESET Mail Security solutions feature proprietary anti-spam, anti-phishing, and host server protection, integrating machine learning, extensive data analysis, and expert human knowledge into a single award-winning mail security platform. This functionality significantly reduces unsolicited emails and targeted threats, enabling employees to concentrate on their work while ensuring the continuity of business operations. Users frequently face phishing attempts that may include additional harmful elements, making it crucial for a streamlined approach to email security. Relying on an individual user to discern legitimate emails can be ineffective, as they would be overwhelmed with the task. To alleviate this burden, users automatically receive notifications regarding spam emails that have been quarantined, enhancing their ability to manage their inboxes effectively.
  • 11
    RevBits Email Security Reviews
    RevBits Email Security, a next-generation email security product, aims to address major gaps in the market. Revbits Email Security uses unique algorithms, such as a page impersonation detection method, to achieve the highest level of email analysis. RevBits Email Security provides a composite probabilistic score for each email. It also includes full details for continued user education. RevBits Email Security Enhances Email Security Architecture RevBits Email Security improves email security by blocking and detecting sophisticated malicious emails that penetrate the organization's email security layer. RevBits Email Security protects the employee endpoint, the last point of email interaction.
  • 12
    Trustwave Secure Email Gateway Reviews
    Offers robust defense against the complex email threats prevalent today, along with comprehensive policy management and thorough data security and compliance features. Safeguarding your email systems from issues like spam, malware, phishing attempts, business email compromise, account takeovers, and ransomware should be a primary concern. Trustwave's Secure Email Gateway (SEG) employs a multi-layered intelligence and detection system that conducts an in-depth analysis of incoming email traffic in real-time, ensuring that your users are shielded from cyber risks. It also allows for seamless integration of email content workflows into your business operations while closely monitoring outgoing emails to avert the potential loss of sensitive information, trade secrets, confidential files, and financial data. By utilizing these security modules alongside the Secure Email Gateway, you bolster your organization’s defenses and compliance measures significantly. Overall, this comprehensive approach not only enhances your email security but also streamlines your organizational processes, ensuring both protection and efficiency.
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