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Email Security Software with Microsoft Outlook Integration (2026)

Last updated: March 2026

Key features of Email Security Software

Based on GetApp's analysis of verified user reviews collected between July 2021 and August 2024.

  • Email Attachment Protection: Users value encryption, customizable blocking, and sandbox features for secure and straightforward handling of sensitive attachments. 95% of reviewers rated this feature as important or highly important.
  • Threat Response: Reviewers appreciate the quick, automated threat detection and response, which helps reduce IT resources and increases security. 95% of reviewers rated this feature as important or highly important.
  • Threat Protection: Users highlight strong phishing and malware detection, which effectively prevents threats from reaching inboxes and ensures data security. 94% of reviewers rated this feature as important or highly important.
  • Spam Blocker: Reviewers note effective spam filtering, customizable rules, and reduced clutter, making inbox management easier and more efficient. 94% of reviewers rated this feature as important or highly important.
  • Encryption: Users emphasize the importance of end-to-end encryption for securing sensitive communications, with ease of use being a crucial factor. 92% of reviewers rated this feature as important or highly important.
  • Reporting/Analytics: Reviewers find value in detailed reports and analytics that provide insights into email threats and help inform security decisions. 81% of reviewers rated this feature as important or highly important.
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19 software options

SpamTitan logo
Category Leaders

Anti-spam filter for business email. Vital email security.

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SpamTitan blocks spam, viruses, malware, ransomware, phishing attempts and other email threats. SpamTitan provides advanced yet easy to use email security for your business. Office 365 friendly

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Microsoft Defender for Office 365 logo
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Cloud-based email security and threat management software

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Microsoft Defender for Office 365 is a cloud-based email security software designed to help businesses automatically detect, investigate, and resolve potential email threats on a centralized platform. Supervisors can configure security policies, perform spoof checks, and maintain a record of reported incidents.

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Topsec Cloud Solutions logo

Your Managed Email Security Specialists

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Topsec Email Security is a complete email filtering solution that helps organizations to check all their incoming and outgoing email content for virus and spam.

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Mailock logo

Secure emails with encryption and recipient authentication

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Exchange confidential information securely using your existing email infrastructure. Encrypt messages and authenticate your recipients.

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Libraesva Email Security logo
Category Leaders

Exceptional Email Security

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Libraesva Email Security stops known and emerging email threats from reaching their target, so you only receive legitimate messages. It provides exceptional email security by integrating cloud email and a secure email gateway with Libraesva’s unique Adaptive Trust Engine.

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MimeCast Email Security logo

Cloud-based email security and threat intelligence platform

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MimeCast Email Security is a cloud-based secure email gateway designed to help businesses in healthcare, IT, legal, financial services, manufacturing, and other industries protect conversations from malware, spam, ransomware, spear-phishing, and zero-day attacks. Supervisors can monitor, detect and remediate internal threats by inspecting internal emails for malicious attachments, links, or confidential information.

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Virtru logo

Cloud-based data privacy and security platform

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Virtru has email and data encryption solutions for organizations of all sizes across all industries including healthcare, government, education, manufacturing, aerospace and defense, finance, IT services, Media and more.

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Trustifi logo

Protect Your Business Emails with AI-Powered Security

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Email security solution that helps manage threat detection, regulatory compliance, data encryption, whitelisting/blacklisting, and more.

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Security Gateway by MDaemon logo

Powerful yet flexible email security software.

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Security Gateway by MDaemon is an email security software designed to help businesses secure email servers from malware and phishing attacks. The solution enables administrators to automatically detect threats across various platforms including Microsoft Exchange Server and Office 365.

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INLYSE Malware.AI logo

VISUAL AI BASED MALWARE DETECTION

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INLYSE Malware.AI is a revolutionary visual AI-based malware detection solution that utilizes cutting-edge technology to convert files into graphical representations and analyze them comprehensively for any signs of malware.

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ESET Cloud Office Security logo

Security platform for Microsoft 365 applications

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ESET Cloud Office Security provides advanced protection for Microsoft 365 applications against malware, spam or phishing attacks with ultimate zero-day threat defense and an easy-to-use console.

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ContentCatcher logo

Cloud-based email security, phishing protection & anti-spam

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ContentCatcher is a web-based SaaS solution offering email security, encryption, anti-spam, phishing protection and compliant archiving to assist organizations of all levels to combat and mitigate malicious email threats, with features including anti-virus, filtering, URL defense, reporting and more

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Mailinblack logo

Cloud-based & on-premise email protection software

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Mailinblack is a cloud-based and on-premise email protection software, which helps organizations check incoming emails for spam or viruses and automatically sort them in inboxes. Features include anti-spear phishing, newsletter categorization, notifications, reporting and analytics.

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IRONSCALES logo

We catch the phish that others miss!

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We ensure your inboxes are uncompromised and your team is unburdened.

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Vade logo

Collaborative cybersecurity based on IA, enhanced by people.

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Vade is a global cybersecurity company specializing in the development of collaborative email security solutions. Combining human and machine intelligence, Vade's solutions form a cybersecurity alliance that is powered by AI and enhanced by people.

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Email Archiving logo

Email archiving service

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Hornetsecurity's email archiving service enables companies who manage thousands of emails every day to automatically & legally store all of their emails with compliance, transparency & control features, plus secure storage & simple email search & retrieval

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Abnormal AI logo

A Fundamentally Different Approach to Email Security

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Abnormal provides total protection against the widest range of attacks including phishing, malware, ransomware, social engineering, executive impersonation, supply chain compromise, internal account compromise, spam, and graymail.

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Heimdal Email Security logo

Email Protection in a Redefined Spam Filter

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Heimdal Email Security is an email protection solution that combines advanced spam filtering with robust malware prevention through a multitude of modern technologies.

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iQ.Suite aaS logo
(0)

Enterprise email management & security solution for M365

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iQ.Suite aaS is a cloud-based enterprise email management and security solution for companies using Microsoft 365. It offers a comprehensive set of features including content-driven encryption, insider threat detection, wrong recipient protection, and more. iQ.Suite aaS offers malware and spam detection to minimize risk and secure emails from unauthorized access. Additionally, to ensure company policies are met, this solution can be used to apply business policies to email communications.

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