Best Email Security Software for Microsoft 365 - Page 2

Find and compare the best Email Security software for Microsoft 365 in 2026

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

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    VIPRE SafeSend Reviews

    VIPRE SafeSend

    VIPRE Security Group

    $30/user/year
    Protect your organization from accidental data breaches with VIPRE SafeSend, a powerful and proactive solution for Microsoft Outlook. SafeSend prompts users to double-check external recipients and attachments before sending emails, significantly reducing the risk of misaddressed messages and costly mistakes. Unlike traditional Data Loss Prevention (DLP) tools that block emails after they’re sent—leaving understaffed security teams burdened with reviewing and releasing them—SafeSend works in real-time, empowering employees to identify and prevent potential errors before they happen. SafeSend also scans outgoing emails and attachments to ensure sensitive data stays securely within your network, offering an extra layer of protection. Over time, employees naturally develop better email habits, fostering a more security-conscious workforce. Available in two packages, SafeSend offers targeted solutions: one focused on preventing misaddressed emails and another designed to address comprehensive DLP use cases. With VIPRE SafeSend, your organization can reduce data leakage risks while building a culture of awareness and accountability.
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    Keepnet Labs Reviews
    Keepnet's extended platform for human risk management empowers organizations to build security cultures with AI-driven simulations, adaptive training and automated phishing responses. This helps eliminate employee-driven risks, insider threats and social engineering within your organization and beyond. Keepnet continuously assesses the human behavior through AI-driven simulations of phishing across email, SMS and voice, QR codes, MFA and callback phishing. This helps to reduce human-driven cybersecurity risks. Keepnet's adaptive learning paths are tailored for each individual based on their risk level, role, and cognitive behavior. This ensures that secure behaviors are embedded in order to continuously reduce cyber risk. Keepnet empowers its employees to report threats immediately. Security admins can respond 168x quicker using AI-driven analysis, automated phishing responses and automated responses. Detects employees that click on phishing links frequently, mishandle information, or ignore security policy.
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    ESET PROTECT Elite Reviews

    ESET PROTECT Elite

    ESET

    $275 one-time payment
    ESET PROTECT Elite serves as a top-tier cybersecurity platform designed for enterprises, seamlessly combining extensive detection and response capabilities with a robust multilayered defense system. Utilizing cutting-edge techniques like adaptive scanning, machine learning, cloud sandboxing, and behavioral analysis, it effectively combats zero-day vulnerabilities and ransomware threats. The solution delivers modern endpoint protection for both computers and mobile devices, along with server security that ensures real-time data safety and mobile threat defense. Additionally, it incorporates full disk encryption, which aids organizations in meeting data protection compliance requirements. ESET PROTECT Elite also boasts powerful email security features that encompass anti-phishing, anti-malware, and anti-spam measures, while providing protection for cloud applications such as Microsoft 365 and Google Workspace. Its vulnerability management and patch capabilities automate the identification and remediation of security flaws across all endpoints, fostering a proactive approach to cybersecurity. Overall, ESET PROTECT Elite is a comprehensive solution that addresses the evolving challenges of modern cybersecurity threats.
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    Avanan Reviews
    Enterprise AI cloud security is crucial for safeguarding against threats such as phishing, malware, data breaches, account takeovers, and shadow IT, particularly for comprehensive cloud applications like Office 365™. Traditional security measures often overlook a significant number of harmful emails, highlighting the need for enhanced email security solutions tailored to protect businesses effectively. In response to this challenge, Avanan revolutionized email security in 2015, recognizing that conventional gateways were unable to adapt to the evolving cloud landscape. Their patented technology provides robust security for all collaboration applications, addressing threats like ransomware, account takeovers, business email compromise (BEC), and supply chain attacks. Impressively, Avanan has achieved a 99.2% reduction in phishing attacks making it to users' inboxes. Utilizing True AI, which draws on extensive data sets, Avanan is designed to intercept even the most advanced phishing attempts prior to them reaching users' inboxes. The implementation of API, machine learning, and AI plays a pivotal role in enhancing cloud email security. Serving over 5,000 customers, with a notable 60% hailing from large enterprises, Avanan has garnered recognition as a leading email security solution in both Gartner Peer Insights and G2. This innovative approach not only fortifies security but also ensures that businesses can operate confidently in the cloud environment.
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    MailList King Reviews

    MailList King

    Xequte Software

    $99.50 one-time payment
    MailList King provides a robust mailing list server solution right on your PC, making it simple to create, oversee, and engage with individuals who are interested in your website, products, or organization. This software seamlessly integrates with widely used email applications like Outlook and Gmail, or it can connect directly to your mail servers to manage mailing list communications, including subscriptions, unsubscriptions, and undeliverable messages, while also sending processing confirmations and double opt-in verifications along with the customized rich text messages you design. If you're currently juggling a mailing list using Excel or Outlook Contacts, MailList King can significantly streamline your process by automatically managing the addition and removal of contacts, allowing you to focus more on crafting engaging newsletters and impactful sales communications. There's no need for advanced computer skills to utilize MailList King, making it an accessible choice for anyone looking to enhance their email marketing efforts. Moreover, its user-friendly interface ensures that even those with minimal technical knowledge can benefit from its powerful features.
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    ManageEngine M365 Manager Plus Reviews
    M365 Manager Plus is a comprehensive Microsoft 365 tool that can be used to report, manage, monitor, audit, and create alerts for critical activities. It is easy to manage Microsoft 365 services such as Exchange Online, OneDrive for Business and Skype for Business from one place. M365 Manager Plus offers extensive pre-configured reports on Microsoft 365. It helps you perform complex tasks such as bulk user management, bulk mail management, secure delegation, and bulk mailbox management. You can monitor Microsoft 365 services 24/7 and receive email notifications about service interruptions. M365 Manager Plus simplifies compliance management with built in compliance reports. It also offers advanced auditing, alerting, and reporting features to help keep your Microsoft 365 setup safe.
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    Echoworx Reviews
    As a cloud-based, full-managed SaaS email encryption provider, Echoworx alone offers 8 ways to send protected mail, with support for 9 authentication options and up-to 28 languages – ensuring secure communication anywhere, on any device. Key features: • Multiple ways to send secure mail ( Web Portal, S/MIME, PGP, Secure PDF, Certificate Encryption, Secure Attachment (PDF, Office, ZIP), TLS with fallback) • More authentication options (Full OAuth Access, Self-Registration, SMS, Shared Secret Passphrase, SSO, System-Generated Verification Codes, Passwordless, and Multi-Factor Authentication (MFA) • Free full proof of concept trial (POC) • 24/7 expert support • End-to-end deployment • Recall and tracking options for secure mail • Extensive branding • Self Service Account Management
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    Libraesva Email Security Reviews
    Libraesva Email Security shields your organization from both established and emerging email threats, ensuring that only genuine messages reach you. It offers top-notch email protection through the fusion of cloud email and a secure email gateway, enhanced by Libraesva's distinctive Adaptive Trust Engine. This engine utilizes AI to comprehend typical behavioral patterns within organizations and among individuals, continuously evaluating the trustworthiness of business interactions and preemptively flagging unusual activity. Libraesva Email Security meticulously scans and sifts through all incoming and outgoing emails, identifying and thwarting advanced malware, phishing attempts, business email compromises, spam, and other risks. Its exclusive sandboxing technology disarms hazardous payloads and active content within attachments, while proactive URL analysis scrutinizes every link to shield users from accessing harmful websites.
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    BooleBox Reviews
    BooleBox serves as a robust content security platform dedicated to safeguarding the integrity and confidentiality of client data against unauthorized access, employing top-tier encryption methods to shield sensitive information from cyber threats. With its sophisticated encryption technology and a range of customizable security options, users can effortlessly create, edit, share, and categorize files and folders without sacrificing ease of use. BooleBox's solutions ensure that your data remains protected across various environments, whether at the office, in the cloud, during email transmission, in collaborative projects, or on widely used platforms like Windows, Outlook, Gmail, OneDrive, and SharePoint. Recognizing the potential digital vulnerabilities that exist, we provide unparalleled protection, acting as a vigilant guardian for your data that remains with it at all times. Our commitment to safeguarding your information extends to managing substantial volumes of data across diverse business sectors. Since our inception in 2011, we have consistently delivered this essential service, adapting and evolving to meet the changing needs of our clients. Our dedication to data protection not only enhances security but also fosters trust and reliability in digital interactions.
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    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.
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    Valimail Reviews
    Safeguard your organization against phishing and business email compromise (BEC) by utilizing advanced DMARC technology. Valimail has been at the forefront of identity-driven anti-phishing solutions since its inception in 2015, helping to establish a reliable framework for digital communications worldwide. Their comprehensive cloud-native platform focuses on validating and confirming sender identities, effectively halting phishing attempts while enhancing brand integrity and ensuring compliance with regulations. By fostering trust in your email communications, you can eliminate phishing threats at their source. Additionally, this solution offers significant advantages such as brand protection, improved email deliverability, and the capability to adopt innovative email standards, including BIMI, AMP, and Schema.org. Features include automatic identification of outbound sending services and access to an extensive database of named sending services. Furthermore, it provides in-depth insights into the authentication status (SPF, DKIM, and DMARC) for all sending domains and services, along with streamlined DKIM key detection and setup, ensuring a robust defense against email fraud.
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    ScanMail Reviews
    Over 90% of targeted cyber attacks initiate through spear phishing emails, highlighting the critical need for robust mail server security. Sadly, many existing mail server security measures, like the basic built-in defenses available in Microsoft® Exchange™ 2013 and 2016, depend on outdated pattern file updates that primarily identify conventional malware. Such measures typically lack the necessary capabilities to recognize harmful URLs or document exploits that are frequently employed in targeted attacks and advanced persistent threats (APTs). In contrast, ScanMail™ Suite for Microsoft® Exchange™ effectively mitigates highly targeted email threats and spear phishing attempts by incorporating document exploit detection, improved web reputation, and sandboxing as part of a tailored APT defense strategy, advantages not provided by competing solutions. Moreover, ScanMail uniquely offers the ability to block traditional malware through advanced email, file, and web reputation technologies, along with correlated global threat intelligence sourced from Trend Micro™ Smart Protection Network™ cloud-based security, ensuring comprehensive protection for your mail server. Ultimately, choosing the right security solution is vital in safeguarding your organization against evolving cyber threats.
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    Material Reviews

    Material

    Material

    $3 per user
    Material Security is an automated detection and response toolkit for Google Workspace and Microsoft 365, combining email security, data security, identity protection, and configuration management in a single platform. Material streamlines SecOps by unifying detections and automating remediations across your cloud workspace in one platform that gives you unprecedented visibility and control. Material stops sophisticated attacks, secures sensitive data in files and mailboxes, detects and contains account takeovers, and reduces risk across your environment. Your cloud workspace isn’t just another app. It's critical infrastructure - home to your people, content, and communications — and requires dedicated protection. Material was founded in response to persistent, sophisticated attacks that continue to demonstrate that disparate point solutions for inbound attacks, compromised accounts, and leakage of sensitive content are insufficient to secure against the threats, vulnerabilities, and consequences inherent to the productivity suite. We are backed by Andreesen Horowitz and protect the world’s fastest-growing and agile companies like Figma, Mars, DoorDash, Lyft, MassMutual and more.
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    Ziroh Mail Reviews
    Even if you avoid sending sensitive emails, doesn't it concern you that your email provider has access to your messages through a backdoor? They can grant access to third parties at any moment, as they are the ones who set the rules and exploit the loopholes. Have you ever considered what a single online purchase receipt can disclose about you? It can reveal your fashion preferences, your financial situation, your payment choices, your address, the type of device you use, and much more. This is quite unsettling, isn't it? Unfortunately, numerous companies and fraudsters are already exploiting this information. Every small piece of information about you is like gold to third parties, who will utilize it to better understand you, influence your purchasing decisions, and, in some cases, even impersonate you on the internet. If you believe your email service is completely secure, it might be wise to conduct a simple search; you'll find that major email providers have faced breaches. Do you still feel reassured? A straightforward, unobtrusive privacy solution exists that can safeguard your emails no matter where they are sent or received, ensuring your peace of mind.
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    EmailAuth.io Reviews
    We want you to simply focus only on what you do! EmailAuth.io is part of the Infosec Ventures group and our core value lies in taking care of your most valuable digital asset: Email. We thrive to increase your Email Deliverability and help you get the maximum ROI from your mailing campaigns and increase trust amongst your customers, partners and vendors! We don't just provide support, we manage! EmailAuth's methodology includes owning the journey of attaining ultimate security of your domains. Our team of Security Experts and dedicated Customer Success Managers make sure to work with you effortlessly.
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    mxHERO Reviews

    mxHERO

    mxHERO

    $5 month/user
    mxHERO is a cutting-edge solution for securing email attachments by seamlessly integrating email with cloud storage services. By substituting traditional email attachments with secure links to cloud storage, mxHERO ensures that sensitive documents are not transmitted or stored insecurely outside of the organization, as typically occurs with standard email practices. The risks associated with email communication can jeopardize sensitive information both internally and externally. mxHERO guarantees that all email content is handled through the content platforms preferred by clients, enhancing security. This innovative service automatically transfers attachments to secure cloud storage, effectively addressing issues related to content sprawl, version control, and file size limitations. Additionally, it mitigates risks associated with data breaches, whether the assets are in transit or at rest. Major global brands and leading enterprises rely on mxHERO for this vital security enhancement. While email presents significant security challenges, it remains essential for business operations. mxHERO provides a way for clients to bolster the security of their existing email systems without causing disruption to their employees or customers, ensuring a smoother transition to a safer email environment.
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    Smartlockr Reviews

    Smartlockr

    Smartlockr

    €0.42 / month / user
    Smartlockr is a people-centric data security platform to easily enable secure email and file sharing for an entire organization. By putting the people in an organization first, Smartlockr offers a user-friendy platform that actively helps people prevent data breaches. The reason for that is that the human error is the main cause of data breaches worldwide. Smartlockr works on and with every operating system and device. It's even available as a plug-in for Microsoft 365 (Outlook). Of course, it can be integrated into any existing systems, and it's even available as an SMTP relay service or a combination of all these options. Smartlockr can also be used to securely send and receive large files of up to 5 TB. Smartlockr is compliant with all privacy regulations and security standards like GDPR, ISO, NTA 7516.
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    Mesh Reviews
    Eliminate the hassle of logging into separate accounts by using a central dashboard that provides visibility into traffic for all your clients. This approach allows you to conduct advanced searches swiftly, thus enhancing your ability to address support tickets efficiently. With just two clicks, you can instantly remove harmful elements and block the sender across your entire customer network. Instead of managing each customer individually, you can establish global rules applicable to all or selected clients in mere seconds. Our solution empowers you to identify and neutralize a wide range of email threats, including business email compromise, spear-phishing, and ransomware, all while being user-friendly and ready to use immediately. Additionally, Mesh ensures seamless synchronization of both your mailboxes and licensing details from Microsoft 365, maintaining alignment between the Mesh billing number and the Microsoft billing number each month. Transitioning email security providers can pose challenges, particularly for larger Managed Service Providers, but our concierge service significantly simplifies the process by handling most of the setup tasks for you. This efficient support not only saves time but also enhances your operational effectiveness, allowing you to focus on what truly matters in your business.
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    MailArmor Reviews

    MailArmor

    Protecte Technologies

    ₹150
    MailArmor offers robust email security tailored for enterprises, utilizing advanced AI technology, seamless integration with Microsoft 365 in just five minutes, and ensures full compliance with CERT-In and DPDP standards, all at prices that are accessible for small and medium-sized businesses. With its innovative features, MailArmor stands out as a top choice for organizations looking to enhance their email protection.
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    Vade Reviews
    Vade stands out as a global frontrunner in predictive email security, safeguarding 1 billion mailboxes across 76 nations. We empower MSPs and SMBs to shield their Microsoft 365 users from sophisticated email threats such as phishing, spear phishing, and malware. Organizations including ISPs, MSPs, and SMBs select Vade's innovative email security tools to defend their clientele and enterprises from these advanced cybersecurity challenges. Our AI-driven solutions are specifically crafted to identify threats that conventional methods often miss. They effectively thwart dynamic phishing attempts that evade standard defenses, as well as targeted spear phishing and business email compromise schemes. Additionally, our technology is adept at neutralizing evasive polymorphic and zero-day malware attacks, ensuring comprehensive protection for all users. With our solutions, businesses can navigate the complexities of email security with confidence and peace of mind.
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    Egress Intelligent Email Security Reviews
    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.
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    INKY Reviews

    INKY

    INKY Technology

    INKY is an award-winning cloud based email protection software. It protects businesses against phishing attacks, as well as blocking spam and malware. INKY uses domain-specific machine-learning and computer vision to identify zero-day phishing emails and block them from reaching legacy email systems. For suspicious emails, warning banners are included in the email. In minutes, integrates into Office 365 across the organization. Safe/Unusual/Malicious warnings let users know how to treat the email. Our advanced dashboard provides complete visibility and tracking of the threats being blocked. INKY's email security software inserts user-friendly warnings into emails. This provides specific guidance to educate and protect your users. Safe/Unusual/Malicious warnings with details guide the user to take a closer look or proceed cautiously. Report an email with just a click is a favorite feature of our clients.
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    Darktrace Reviews
    Darktrace offers a cutting-edge cybersecurity solution with its ActiveAI Security Platform, which utilizes AI to ensure proactive and real-time defense against cyber threats. The platform continually monitors enterprise data, from emails and cloud infrastructure to endpoints and applications, providing a detailed, contextual understanding of the security landscape. Darktrace’s AI-driven system autonomously investigates alerts, correlates incidents, and responds to both known and unknown threats, ensuring that businesses stay one step ahead of adversaries. By automating investigations and recovery actions, Darktrace reduces the burden on security teams and speeds up incident response, driving efficiency and improving cyber resilience. With a significant reduction in containment time and faster SOC triage, Darktrace ensures businesses are better protected from ever-evolving threats.
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    Agari Reviews
    Utilize Trusted Email Identity to safeguard both employees and clients from sophisticated email threats. These advanced attacks exploit significant security gaps that traditional email protection measures fail to cover. Agari instills confidence in workers, customers, and partners to trust their email communications. Its innovative AI, with daily updates from over 300 million machine learning models, distinguishes legitimate messages from harmful ones. Drawing upon a vast repository of trillions of global email interactions, it offers profound insights into patterns and connections. With years of expertise in establishing email security benchmarks, Agari has been embraced by numerous Global 2000 organizations to enhance their protection measures. This comprehensive approach ensures that users are better equipped to navigate the complexities of modern email security challenges.
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    Abnormal AI Reviews
    Abnormal AI provides an innovative behavioral AI platform that defends against highly targeted and automated email threats such as phishing, social engineering, and account takeovers. By employing superhuman understanding of human behavior and anomaly detection, it stops AI-driven attacks that often bypass conventional security tools. The platform operates fully autonomously, detecting and neutralizing threats in milliseconds without requiring human intervention, which significantly reduces the workload on security teams. It integrates smoothly with cloud email services like Microsoft 365, offering multi-layered protection with minimal disruption. With more than 3,000 customers, including 20% of the Fortune 500, Abnormal AI has proven its ability to reduce phishing attacks by 90% and lower SOC headcount by 50%. Customers praise its fast implementation, ease of use, and strong customer support. Its AI agents also automate repetitive security operations center workflows, accelerating response times. This comprehensive solution is designed to protect humans by focusing on behavioral insights rather than relying solely on traditional rule-based detection.