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Total Products under this Category: 120
Last updated: August 05, 2026
Why You Can Trust G2's Software Rankings:
G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

Highlighted products: Proofpoint Core Email Protection, Check Point Email Security, Microsoft Defender for Office 365, Valimail, SaneBox, Paubox, Abnormal AI, and LibraCyber Email Security.
Underlying data: [Grid® JSON](https://www.g2.com/categories/email-anti-spam/grids.json?focus%5B%5D=proofpoint-core-email-protection&focus%5B%5D=check-point-email-security&focus%5B%5D=microsoft-microsoft-defender-for-office-365&focus%5B%5D=valimail&focus%5B%5D=sanebox&focus%5B%5D=paubox&focus%5B%5D=abnormal-ai&focus%5B%5D=libracyber-email-security)
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Compute Engine is Google's infrastructure as a service (IaaS) platform for organizations to create and run cloud-based virtual machines.
In today’s complex cyber-threat environment, you need an email security solution that delivers comprehensive security against sophisticated attacks while also being easy to deploy, configure, and manage. Barracuda provides cloud-based protection against advanced email attacks, helps ensure email continuity and scans outgoing email to prevent data loss - all without the need to install any additional hardware or software.
Average Rating: 4.2/5.0
Total Reviews: 37
AI-generated summary from verified user reviews
"Strong Spam and Phishing Protection That’s Easy to Manage"
Rating: 4.5/5.0 stars
— Phillip P.
"User-Friendly Software That Helps Protect Our Environment"
Rating: 5.0/5.0 stars
— Kelly F.
CyberSentriq is an integrated cybersecurity and data protection platform, leveraging solutions from two best-of breed vendors in the MSP space. Partnering with over 3,000 MSPs and protecting over 150,000 SMBs globally, CyberSentriq provides an unmatched combination of proactive AI-driven email and web security, advanced data protection, and operational resilience. The CyberSentriq platform offers: - Data backup & recovery for Microsoft M365 & Entra ID, Azure, Google workspace and more - AI-driven threat intelligence and detection - Advanced email security at both the Mail Exchange (MX) and Integrated Cloud Email Security (ICES) layers. - Security awareness services - Phishing simulation - Email archiving and encryption
Average Rating: 4.6/5.0
Total Reviews: 385
AI-generated summary from verified user reviews
"All-in-One Email & Web Security with Excellent Training and Responsive Support"
Rating: 4.5/5.0 stars
— George P.
"Superior Algorithm for Email Identification"
Rating: 5.0/5.0 stars
— Ashley B.
Litmus is the enterprise marketing success platform that gives marketing teams the control, visibility, and confidence to execute high-performing email programs at scale. From pre-send testing to post-send analytics, Litmus eliminates the errors, inefficiencies, and blind spots that cost enterprise senders revenue and reputation. Trusted by marketing teams at the world's leading brands, Litmus integrates into existing enterprise workflows to accelerate production, enforce brand standards, and protect deliverability across every send. Core capabilities: Email previews across 100+ clients and devices. Validate exactly how every email renders in Gmail, Outlook, Apple Mail, on mobile, in dark mode, and across every major environment — before sending to millions of subscribers. Eliminate the rendering errors that damage brand credibility at scale. Automated pre-send QA. Run spam filter testing, link validation, image blocking checks, and accessibility scans within a single workflow. Enterprise teams ship in half the time and with fewer errors when quality checks are built into the process, not bolted on at the end. Deliverability and inbox placement monitoring. Track inbox placement rates by mailbox provider, monitor sender reputation in real time, and blocklist hits or authentication failures. Litmus surfaces the deliverability intelligence your ESP doesn't provide. Sender Certification. Be part of the industry's most trusted allowlist, backed by 24/7 monitoring and exclusive data relationships with mailbox providers worldwide. Certified senders reach the inbox with a level of assurance no other program delivers. Competitive Intelligence. Monitor competitor send volume, frequency, subject line strategies, and inbox placement. Give enterprise marketing teams the benchmarking data they need to make informed strategic decisions and stay ahead of the market. Enterprise collaboration and approvals. Manage multi-stakeholder review cycles inside a single platform. Centralize feedback, enforce approval workflows, and get campaigns through legal, compliance, and brand review without version chaos or scattered email threads. For enterprise organizations ready to scale further, Litmus is the foundation for Validity Engage — an AI-powered email execution platform that orchestrates the full email marketing workflow, from content creation through sending and optimization. Litmus is part of the Validity portfolio, alongside BriteVerify for contact data validation and DemandTools for Salesforce CRM data quality — giving enterprise revenue and marketing teams a connected solution for data integrity, email performance, and program execution.
Average Rating: 4.5/5.0
Total Reviews: 973
AI-generated summary from verified user reviews
"Litmus Boosts Email Marketing Precision and Efficiency"
Rating: 5.0/5.0 stars
— Grecia L.
"Collaboration Made Easy, Minor Pin Issue Aside"
Rating: 4.0/5.0 stars
— Verified User in Computer Software
Darktrace / EMAIL is an email security platform powered by Self-Learning AI that protects organizations against the most advanced threats across email and collaboration tools that other solutions miss. Recognized as a Leader in Gartner’s Magic Quadrant and Leaders in the 2025 Voice of the Customer award for Email Security Platforms, it is designed to address the growing sophistication of communication-based attacks. Traditional secure email gateways often rely on static rules or signatures, which struggle against modern threats such as business email compromise and supply chain attacks. Darktrace / EMAIL takes a different approach by using Self-Learning AI to understand the unique communication patterns of each organization and user. This allows it to detect subtle anomalies across inbound, outbound, and lateral messages, and respond with precise, autonomous actions. Key capabilities include: - Behavioral threat detection: Identifies phishing, ransomware, account takeovers, and insider risks by learning “normal” communication behavior of internal and external users. - Protection beyond the inbox: Extends security to collaboration platforms like Microsoft Teams and SaaS applications, addressing the shift of phishing into new channels. - Adaptive response: Suspicious emails are automatically quarantined, links are rewritten, or attachments are removed, all without interrupting legitimate business communication. This approach enforces regular communication and ensures that as much safe, non-malicious content as possible is retained. - Data protection: Provides behavioral data loss prevention and assists with your DMARC configuration and monitoring to safeguard sensitive information and brand reputation. For security teams, Darktrace / EMAIL reduces operational overhead by automating triage and response. Its Cyber AI Analyst provides contextual insights, while end-users benefit from clear, in-app narratives that explain why a message is suspicious—helping to reduce false phishing reports and improve awareness. Benefits for organizations include: - Comprehensive coverage across email, collaboration, and SaaS platforms. - Reduced workload for security teams through automation and AI-driven analysis. - Seamless integration with Microsoft 365, Exchange, and Google Workspace without disrupting mail flow. In summary, Darktrace / EMAIL delivers adaptive, AI-driven protection across the full communication ecosystem. Its dual recognition as a Gartner Leader in both the Voice of the Customer award and the Magic Quadrant for Email Security Platforms in 2025 highlights its effectiveness in helping organizations defend against today’s most complex and fast-evolving threats.
Average Rating: 4.0/5.0
Total Reviews: 21
AI-generated summary from verified user reviews
"AI-Powered Email Security with Intuitive Investigations and Real-Time Response"
Rating: 4.5/5.0 stars
— Verified User in Manufacturing
"User-Friendly UI, Strong AI Integration, and High Performance at a Great Price"
Rating: 5.0/5.0 stars
— Verified User in Computer Software
Vade is a global cybersecurity company specializing in developing threat detection and response technology with artificial intelligence. Founded in 2009 in Hem, France, Vade has eight global locations, including offices in the US, France, Japan, Canada, and Israel. Vade for M365 is a threat detection and response solution for Microsoft 365 that is purpose-built for MSPs. Vade combines powerful, AI-based protection with integrated, no-cost features that help MSPs save time, reduce admin workload, and generate more ROI from cybersecurity: • Phishing, spear phishing, and malware/ransomware protection • Auto- and assisted remediation • Multi-tenant incident response • Automated user awareness training • SIEM integration • Error-free configuration • Deploy in minutes • No MX record change • Layers with EOP/ATP
Average Rating: 4.6/5.0
Total Reviews: 169
AI-generated summary from verified user reviews
Rating: 5.0/5.0 stars
— Pascal G.
Rating: 5.0/5.0 stars
— Humberto M.
INKY is the behavioral email security platform that blocks threats, prevents data leaks, and coaches users to make smart decisions. Like a security coach, it signals suspicious behaviors with interactive banners that guide users to take safe action on any device or email client. IT teams don’t face the burden of filtering every email themselves or maintaining multiple systems. Through powerful technology and intuitive user engagement, INKY keeps bad actors out for good. Smarter AI-powered email security, beyond Graphus.
Average Rating: 4.2/5.0
Total Reviews: 111
AI-generated summary from verified user reviews
"User-Friendly Email Security That Boosts Phishing Awareness"
Rating: 4.0/5.0 stars
— Darren .
"Inky smooth Microsoft 365 onboarding"
Rating: 5.0/5.0 stars
— Verified User in Consulting
SpamTitan Email Security identifies and prevents email spam, viruses via email, malware, malicious links, phishing attacks, spoofing and other email borne malicious threats. We provide advanced email security for your business or msp without making it complicated. Inbound and outbound scanning with AI driven real time threat intelligence. SpamTitan Email Security is built for the SMB and SME markets, businesses using Office 365, managed service providers and the education sector. Email Security, Web Security and Compliance do not need to cost an arm and a leg for those looking to save costs in their IT security spend and productivity. Security is a feature that Microsoft has added to 0365 and for most organizations this does not meet their security benchmarks. Some important features include: Phishing Protection. Real-time Blacklists: Protect your business by blocking spam, malware and malicious emails in real-time. Office365 Friendly: Strengthen your Office 365 security against Spam and Malware Cloud-based: Protect your business on-the-go with our cloud-based system. No hardware. Virus & Malware Detection: Block malware, ransomware and viruses from destroying your business. Free Tech Support: We offer excellent free technical support from a live technician. Outbound Mail Scanning: Ensure that malicious emails are not sent from your corporate emails. Affordable Monthly Billing: It is a very affordable, effective and easy to use solution simply set and forget. Industry Leading Support Team: Renowned for our focus on supporting customers with 98% satisfied customer rate in 2018 Whitelisting, Blacklisting & Greylisting: Allows whitelisting and blacklisting, advanced reporting, recipient verification and outbound scanning of email. Protection from Zero Day Attacks: A secure solution for email needs the ability to anticipate new attacks using predictive technology Data Leak Prevention: SpamTitan adds powerful data leak prevention rules to prevent internal data loss Dedicated RBLs: SpamTitan includes 6 specialist Real Time Blacklists (RBLs). Email Content Filtering: It includes comprehensive content filtering rules Security Against Infected Attachments: Allows the blocking of specified attachments by type (per domain) i.e. ZIP files Advanced Threat Protection: Inbuilt Bayesian auto learning and heuristics Spam Quarantine Reports: Extensive and detailed quarantine reports allowing end users control their account Customizable Policies: Each user, domain, domain group and overall system has its own block list SpamTitan's sandboxing feature protects against breaches and sophisticated email attacks by providing a powerful environment to run in-depth, sophisticated analysis of unknown or suspicious programs and files. SpamTitan Cloud is also a vital additonal email security layer in protecting Office 365 from malware and zero day attacks. Since 1999 SpamTitan Email Security has been building up threat intelligence that will dramatically reduce the risk of a successful email attack on your organization. Cloud security is all we do.
Average Rating: 4.5/5.0
Total Reviews: 176
AI-generated summary from verified user reviews
"Strong Email Protection with Easy Deployment and a User-Friendly GUI"
Rating: 5.0/5.0 stars
— Sergio S.
"The S in SpamTitan is for Security"
Rating: 4.0/5.0 stars
— Goodness I.
Trend Micro OfficeScan infuses high-fidelity machine learning into a blend of threat protection techniques to eliminate security gaps across any user activity and any endpoint. It constantly learns, adapts, and automatically shares threat intelligence across your environment.
Average Rating: 4.0/5.0
Total Reviews: 43
Rating: 4.5/5.0 stars
— jose luis M.
Rating: 4.0/5.0 stars
— Christian A.
Symantec Mail Security for Microsoft Exchange (SMSMSE) combines Symantec anti-malware technology with advanced heuristics and file reputation to provide real-time protection for email against viruses, spyware, phishing, and other malicious attacks. For additional protection, SMSMSE offers Symantec Premium AntiSpam (additional license), powered by Brightmail technology. Together, these protections help to stop 99 percent of incoming spam with less than one false positive per million. SMSMSE enforces content filtering policies on Microsoft Exchange Server 2010, 2013, and 2016, while supporting hosted, Microsoft Hyper-V®, and VMware virtualized Exchange server environments. Symantec Mail Security for Microsoft Exchange complements other layers of protection by preventing the spread of email-borne threats and enforcing data loss prevention (DLP) policies.
Average Rating: 4.3/5.0
Total Reviews: 13
"Good to have such a software for threat detection in todays Pandemic situation."
Rating: 5.0/5.0 stars
— Verified User in Oil & Energy
"Great Exchange Server Mail security!"
Rating: 4.0/5.0 stars
— Jason M.
Intermedia Hosted Exchange provides a comprehensive cloud-based Microsoft Exchange Online experience to small to midsize businesses (SMBs). Highlights include versatile security options and white glove email migration support. Exchange Email is one of 30+ essential business applications from Intermedia. With a single control panel, your cloud is easier to use and more efficient to manage. Plus there's just one bill, one password and one support team. Join the 1.4M business users that trust Intermedia with their communication needs and experience: Unbelievable uptime: Our 99.999% uptime SLA means no more than 26 seconds of unplanned downtime per month. J.D. Power-certified 24/7 support: Our expert support is certified by J.D. Power as "exceptional". We're here for you by phone or chat. Expert migration and onboarding: — FREE! Our Cloud Concierge™experts will create a custom migration plan with no downtime or data loss.
Average Rating: 3.9/5.0
Total Reviews: 23
"Experience the Emailing with Intermedia Exchange Email"
Rating: 5.0/5.0 stars
— Dhawlandra S.
Rating: 5.0/5.0 stars
— Caroline A.
ScanMail Suite for IBM Domino stops highly targeted email attacks, such as spear phishing, by using document exploit detection, enhanced web reputation, and sandboxing as part of a custom APT defense. ScanMail also blocks traditional threats with reputation technology and correlated global threat intelligence from Trend Micro Smart Protection Network cloud-based security.
Average Rating: 4.6/5.0
Total Reviews: 10
Rating: 4.5/5.0 stars
— Rahul singh B.
Rating: 4.5/5.0 stars
— Jai S.
Proofpoint Email Fraud Defense gives you the visibility, tools, and services to authorize legitimate email and block fraudulent messages before they reach the inbox.
Average Rating: 4.3/5.0
Total Reviews: 14
"Strong Email Protection Against Spam, Scams, and Phishing"
Rating: 4.0/5.0 stars
— Verified User in Financial Services
"Time-Saving Email Defense with Intuitive Visibility"
Rating: 4.5/5.0 stars
— Tanis C.
N-able™ Mail Assure is cloud-based email security helps you and your customers stay in control and protect inbound and outbound email using collective threat intelligence, 24/7 email continuity, and long-term email archiving. Proprietary filtering technology, combined with real-time pattern threat recognition and machine learning technology, helps protect users against advanced phishing attacks, ransomware, malware, spam, and other email-borne threats. N-able™ Mail Assure offers: • Advanced threat protection for inbound and outbound email • Built-in 24/7 email continuity to maintain business productivity • Encrypted, long-term email archiving • A Private Portal for specifically business-critical emails • 99.99% malware catch rate, as certified by Virus Bulletin: https://www.virusbulletin.com/virusbulletin/2022/06/vbspam-comparative-review/ • A multitenant web interface designed for your technicians and end-users • Seamless integration with Microsoft 365™ • Quarantine reports to give users visibility over email flow
Average Rating: 4.0/5.0
Total Reviews: 67
AI-generated summary from verified user reviews
Rating: 5.0/5.0 stars
— Matei N.
"Easy Setup for Microsoft 365"
Rating: 4.0/5.0 stars
— John Keanu M.
Safeguard your cloud-based email with our industry-leading threat and anti-spam protection for Office 365, Google Apps, and more.
Average Rating: 4.1/5.0
Total Reviews: 61
"Excellent Email Protection and Data Loss Prevention with Symantec Email Security Cloud"
Rating: 4.5/5.0 stars
— Verified User in Information Technology and Services
"Securing PC's against various threats"
Rating: 5.0/5.0 stars
— Sajan V.
Essential cyber protection and security control for your small business Avast Essential Business Security helps deliver device security for small businesses that want remote visibility and centrally controlled protection against viruses, phishing, ransomware, and advanced cyberattacks. Avast Small Business Solutions deliver next-gen endpoint protection for business Windows PCs, Mac, and Windows servers that you can manage anywhere via a web browser. Our robust, easy-to-use security for devices and data is designed to keep small organizations and their employees safer online. Avast antivirus with multiple layers of security, online privacy, and remote-control features provides powerful cybersecurity controlled via a cloud-based management console.
Average Rating: 4.3/5.0
Total Reviews: 109
AI-generated summary from verified user reviews
"Advanced protection with remote management capabilities"
Rating: 4.5/5.0 stars
— Siddhant P.
"The Detailed View about Avast"
Rating: 4.5/5.0 stars
— Blessed J.