Safeguard your organization from sophisticated email-borne attacks. Cloud email security solutions are essential for resilient cyber defense in 2026.
19 tools highlightedUpdated September 2026
Top Cloud Email Security Solutions Tools for 2026
Compare leading cloud email security solutions platforms by pricing, strengths, trade-offs, and best-fit teams.
1. Fortra Cloud Email Protection
Cloud-native email security that stops phishing, BEC, and account takeover missed by native filters.
4.6
Fortra Cloud Email Protection is an API-based, cloud-native layer for Microsoft 365 and Google Workspace that catches advanced threats bypassing built-in filters — business email compromise, credential phishing, supply-chain impersonation, and account takeover. Behavioral analytics and threat intelligence drive automatic remediation of malicious mail post-delivery, with no MX record changes required.
Custom enterprise pricing (contact sales)
Best for: Microsoft 365 and Google Workspace teams needing advanced anti-phishing and BEC defense
Pros
API deployment with no MX changes and fast rollout
Strong detection of BEC, impersonation, and credential phishing
Automated post-delivery remediation of malicious email
Enriched by Fortra threat intelligence and takedown services
Cons
Enterprise pricing on request
Designed to augment, not replace, native email security
Advanced tuning benefits from security-team involvement
Advanced threat protection for your most targeted vector.
4.7
Proofpoint offers a comprehensive suite of cloud-based email security solutions. It protects organizations from advanced threats like phishing, malware, spam, and imposter email. It includes Targeted Attack Protection (TAP), email data loss prevention, and security awareness training to fortify your human layer.
Contact for pricing
Best for: Large enterprises requiring advanced threat protection
Pros
Market leader with extensive threat intelligence.
Strong protection against advanced persistent threats.
All-in-one email security, archiving, and continuity.
4.6
Mimecast provides a cloud-native email security platform that offers protection against a wide range of email-borne threats. It combines advanced threat protection, spam and virus protection, secure messaging, and data leak prevention with email archiving and continuity services.
Contact for pricing
Best for: Organizations seeking integrated email security and data management
Pros
Comprehensive suite including archiving and continuity.
Advanced protection against phishing, malware, and business email compromise.
4.5
Microsoft Defender for Office 365 offers robust email security capabilities integrated within the Microsoft 365 ecosystem. It provides advanced threat protection against sophisticated attacks, including safe attachments, safe links, anti-phishing policies, and real-time detection for targeted threats.
Included in select Microsoft 365 subscriptions (e.g., E5)
Best for: Microsoft 365 users seeking native email security
Comprehensive, AI-powered email protection for evolving threats.
4.3
Barracuda's Email Protection suite provides multi-layered security against email-borne threats. It combines gateway defense, AI-powered inbox defense, data loss prevention, and security awareness training. It's designed to protect against phishing, spam, malware, and account takeover attacks.
Contact for pricing
Best for: SMBs and mid-market organizations needing robust and easy-to-manage security
Pros
Strong protection against a broad range of threats.
User-friendly interface and deployment.
Includes security awareness training.
Cons
Some advanced features may require additional add-ons.
Advanced threat protection for cloud email and collaboration.
4.4
Trend Micro Cloud App Security extends protection to cloud email services like Microsoft 365 and Google Workspace. It detects and blocks advanced threats, including ransomware, business email compromise, and credential phishing, that target these platforms, offering data loss prevention and compliance features.
Contact for pricing
Best for: Organizations heavily reliant on Microsoft 365 or Google Workspace
Pros
Specialized in securing cloud email and collaboration apps.
Strong detection of sophisticated malware and BEC attacks.
Integration with leading cloud platforms.
Cons
Can have a steeper learning curve for configuration.
Integrated, high-performance email security for all environments.
4.2
FortiMail offers advanced multi-layered protection against the full range of email-borne threats. Available as a cloud service, virtual appliance, or physical appliance, it provides antispam, antiphishing, antimalware, and data loss prevention, with strong integration into the Fortinet security fabric.
Contact for pricing
Best for: Fortinet customers seeking integrated email security within their ecosystem
Predictive email security powered by artificial intelligence.
4.3
Sophos Email provides cloud-based protection against ransomware, spam, phishing, and data loss. It uses artificial intelligence to detect and block unknown threats, offers robust encryption and data loss prevention, and integrates with Sophos Central for unified management.
Contact for pricing
Best for: Organizations looking for AI-powered email security and unified management
Pros
AI-driven threat detection for zero-day attacks.
Unified management through Sophos Central.
Strong encryption and DLP features.
Cons
Can require fine-tuning for optimal performance.
Support response times may vary outside of business hours.
Enterprise-grade security and productivity for frontline workers.
4.1
While not solely an email security product, Google Workspace Frontline includes advanced security features for Gmail as part of its offering. It provides phishing and malware protection, data loss prevention, and robust access controls tailored for organizations using Google Workspace, particularly for dispersed workforces.
Contact for pricing
Best for: Google Workspace users needing enhanced security for their email and collaboration
Pros
Deep integration with Gmail and Google Workspace.
Leverages Google's global threat intelligence infrastructure.
Simplified management for Google-centric organizations.
Cons
Less feature-rich compared to dedicated email security solutions.
Primarily aimed at Google Workspace users, not a standalone product.
Stop advanced email attacks with AI-native security.
4.7
Abnormal Security provides an AI-native cloud email security platform that behavioral AI to detect and prevent a wide range of advanced email attacks, includingLuke's social engineering, phishing, malware, andBEC. It integrates seamlessly with existing cloud email infrastructure.
Customized quotes based on organization size and needs.
Best for: Enterprises seeking advanced protection against sophisticated email attacks.
Pros
Advanced behavioral AI for superior threat detection.
Seamless integration with Microsoft 365 and Google Workspace.
Automated incident response and remediation.
Cons
Can be more expensive than traditional email security solutions.
Newer technology might require some adjustment for IT teams.
Automated DMARC enforcement for complete email authentication.
4.5
Valimail offers a DMARC-as-a-service platform that automates email authentication, ensuring only legitimate senders can send emails on your behalf. It provides visibility into all email sending sources and protects against impersonation and phishing attacks.
Tiered pricing based on domain volume and features; contact for details.
Best for: Organizations needing robust DMARC implementation and email authentication.
Pros
Automates complex DMARC enforcement for optimal protection.
Provides comprehensive visibility into email sending ecosystem.
Protects against brand impersonation and phishing.
Cons
Primarily focused on DMARC, may require other solutions for full security.
Initial setup can be complex due to DMARC intricacies.
Pre-emptive email security to stop phishing and malware.
4.6
Cloudflare Area 1 Security provides a pre-emptive email security service that stops phishing, BEC, and malware attacks before they reach inboxes. It leverages a cloud-native platform with advanced analytics and threat intelligence to identify and block threats at the earliest stages.
Contact sales for a custom quote.
Best for: Organizations looking for advanced, pre-emptive protection against email-borne threats.
Pros
Pre-emptive threat detection stops attacks early.
Cloud-native platform with scalable security.
Comprehensive protection against various email threats.
Cons
May have a learning curve for some administrators.
Integration with some niche systems might require effort.
Human layer security to prevent data loss and insider threats.
4.4
Tessian focuses on human layer security, using behavioral intelligence to prevent data loss, accidental errors, and insider threats caused by employees. It detects anomalous email activity, flags misdirected emails, and warns users of potential phishing or compliance breaches.
Custom pricing based on user count and modules.
Best for: Businesses concerned with insider threats, data loss prevention, and human error in email.
Pros
Specializes in preventing human-activated data breaches.
Real-time alerts and education for users.
Integrates with popular email platforms like Microsoft 365.
Cons
Focuses on internal threats, may need other tools for external protection.
Requires user adoption and understanding for maximum effectiveness.
Advanced threat protection for email and collaboration channels.
4.8
Perception Point offers a comprehensive advanced threat protection solution for email, cloud collaboration apps, and web browsers. It uses multi-layered security engines, including proprietary dynamic and static analysis, to prevent phishing, malware, and other advanced attacks.
Quote-based, depending on the scope of protection.
Best for: Enterprises needing robust, multi-channel threat protection with fast response.
Pros
Comprehensive protection across multiple communication channels.
Fast detection and remediation of threats.
Excellent support and managed incident response.
Cons
Can be a more premium-priced option.
Integration with very niche, legacy systems might require custom work.
Complete, multi-layered protection for cloud email and collaboration suites.
4.6
Avanan provides a complete, multi-layered security solution for cloud email and collaboration platforms. It uses AI to detect and prevent sophisticated phishing, malware, and data loss, integrating directly into the email flow via API to catch threats before they reach the inbox. It protects against advanced attacks that bypass traditional security.
Contact for pricing (quote-based)
Best for: Enterprises and organizations seeking advanced, AI-driven protection for cloud email and collaboration suites.
Pros
AI-powered, API-based protection integrated directly into cloud email platforms.
Comprehensive suite covering phishing, malware, data loss, and account takeover.
Known for catching advanced threats that bypass standard security measures.
Cons
Can be complex to configure and manage for some organizations.
Higher price point compared to some entry-level solutions.
Advanced email security against ransomware, phishing, and data theft.
4.3
Forcepoint Email Security offers robust protection against a wide range of email-borne threats, including advanced malware, ransomware, and phishing attacks. It provides data loss prevention (DLP) and encryption capabilities, safeguarding sensitive information and ensuring compliance. The solution can be deployed on-premises, in the cloud, or as a hybrid model.
Contact for pricing (quote-based)
Best for: Large enterprises and government agencies requiring comprehensive email security with strong DLP and flexible deployment.
Pros
Strong historical reputation for advanced threat protection.
Protect your network from spam, phishing, and malware.
4.2
Mailwasher Enterprise is an email security solution that focuses on spam filtering, virus protection, and anti-phishing. It operates at the gateway level, scanning emails before they reach the mail server. It provides a robust set of rules and heuristics to identify and block unwanted and malicious emails, ensuring a clean and secure inbox for users.
Contact for pricing (quote-based for enterprise)
Best for: Small to medium-sized businesses and organizations prioritizing strong spam and basic malware protection at the gateway.
Pros
Effective and highly customizable spam filtering.
Gateway-level protection intercepts threats before the mail server.
Good performance with minimal impact on email delivery.
Cons
Less focus on advanced, AI-driven threat detection compared to newer solutions.
User interface might feel less modern than some competitors.
Comprehensive multilayered protection against email-borne threats.
4.5
Cisco Secure Email provides robust, multilayered protection against a spectrum of email threats, including phishing, malware, spam, and business email compromise (BEC). It leverages global threat intelligence from Cisco Talos to identify emerging threats, offering features like data loss prevention, advanced malware protection, and encryption to secure email communications.
Contact for pricing (quote-based)
Best for: Large enterprises and organizations heavily invested in the Cisco ecosystem, requiring advanced, integrated email security.
Pros
Leverages industry-leading threat intelligence from Cisco Talos.
Comprehensive feature set including DLP, AMP, and encryption.
Strong integration with other Cisco security products.
Cons
Can be complex to deploy and manage for organizations without Cisco expertise.
Potentially higher cost for smaller organizations.
AI-powered email security against advanced threats.
4.4
Gatefy Email Security uses artificial intelligence to detect and block sophisticated email threats such as phishing, spoofing, ransomware, and business email compromise. It offers real-time protection, spam filtering, and data loss prevention, helping organizations to maintain a secure email environment. Its cloud-native architecture ensures scalability and ease of deployment.
Contact for pricing (quote-based)
Best for: Businesses looking for AI-powered, cloud-native email security with a focus on advanced threat detection.
Pros
AI-driven detection for advanced and evolving email threats.
Cloud-native architecture for scalability and easy deployment.
Real-time protection with strong spam filtering.
Cons
Newer entrant in the market, with less extensive track record than established players.
Integration capabilities with some legacy systems might be less mature.
Cloud Email Security Solutions Buyer's Guide for 2026
Everything you need to know before choosing a cloud email security solutions solution — features, pricing, evaluation criteria, and answers to common questions.
01
What is Cloud Email Security Solutions?
Cloud Email Security Solutions are a category of security software designed to protect an organization's email infrastructure from various threats, including spam, phishing, malware, business email compromise (BEC), and other advanced persistent threats. Unlike traditional on-premise email security gateways, cloud-based solutions are hosted and managed by a third-party provider, offering scalability, flexibility, and often more advanced threat detection capabilities. They act as a vital layer of defense, sitting between the internet and an organization's email servers, inspecting incoming and outgoing emails for malicious content and suspicious patterns before they reach the end-user.
02
Why Cloud Email Security Solutions matters in 2026
In 2026, the landscape of cyber threats continues to evolve at an alarming rate, making robust cloud email security more critical than ever. Phishing attacks are becoming increasingly sophisticated, often leveraging artificial intelligence to craft highly convincing and personalized lures. Ransomware and malware delivery via email remain prevalent, capable of crippling businesses and causing significant financial and reputational damage. Furthermore, the rise of remote and hybrid work models means that employees are accessing email from diverse locations and devices, broadening the attack surface. Cloud email security solutions offer the agility and advanced threat intelligence needed to combat these evolving threats effectively. They provide real-time protection, adapt to new attack vectors, and often include features like sandboxing, URL rewriting, and data loss prevention (DLP) to ensure comprehensive protection in a dynamic threat environment.
03
Key features to look for
Advanced Threat Protection (ATP): Look for solutions that go beyond basic spam filtering, offering capabilities like sandboxing for suspicious attachments, URL rewriting and analysis for malicious links, and imposter protection to detect BEC attempts.
Anti-Phishing and Anti-Spoofing: Essential features to combat sophisticated phishing campaigns and email spoofing attempts that mimic legitimate senders.
Spam and Malware Filtering: Robust and continuously updated filters to block unwanted emails and known malware.
Data Loss Prevention (DLP): Tools to prevent sensitive information from being sent outside the organization via email, ensuring compliance and data protection.
Email Encryption: The ability to encrypt sensitive emails to protect their content during transit.
User Awareness Training Integration: Solutions that integrate with or provide user training modules to educate employees about email security best practices.
Threat Intelligence: Access to real-time global threat intelligence to identify and block emerging threats quickly.
Reporting and Analytics: Comprehensive dashboards and reports that provide visibility into email traffic, detected threats, and security posture.
Ease of Management and Deployment: A user-friendly interface and straightforward deployment process are crucial for efficient operation.
Scalability and Reliability: The ability to scale with your organization's growth and a track record of high uptime and performance.
Integration with Existing Systems: Compatibility with your current email platform (e.g., Microsoft 365, Google Workspace) and other security tools.
04
How to choose the right Cloud Email Security Solutions
Selecting the right cloud email security solution requires a careful assessment of your organization's specific needs, risk profile, and budget. Begin by identifying your primary email security challenges and the types of threats you are most vulnerable to. Evaluate vendors based on the key features listed above, prioritizing those that align with your security objectives. Consider the size of your organization and the number of email users, as this will impact scalability and pricing. Request demonstrations and free trials to experience the solution firsthand and assess its ease of use and effectiveness. Pay close attention to customer support, as timely assistance is crucial during security incidents. Finally, compare pricing models and ensure the solution offers a good return on investment by reducing security risks and improving operational efficiency. Don't hesitate to consult with cybersecurity experts or review independent evaluations to gain further insights before making a decision.
05
Common pricing models
Cloud Email Security Solutions typically employ several common pricing models:
Per-User, Per-Month/Year: This is the most prevalent model, where you pay a recurring fee for each protected email user. Pricing often decreases per user as the total number of users increases.
Tiered Pricing: Vendors may offer different service tiers (e.g., Basic, Standard, Premium) with varying levels of features and support, each with its own per-user cost.
Volume-Based Discounts: Many providers offer discounts for larger organizations with a high number of users.
Feature-Based Pricing: Some solutions allow you to pick and choose specific features, influencing the overall cost. For example, adding DLP or advanced threat intelligence might incur extra charges.
Annual Contracts: Most cloud email security solutions are sold with annual contracts, often with discounts for multi-year commitments.
