--- title: "Best Email Security Software 2026 | Capterra" description: "Find the top Email Security software of 2026 on Capterra. Based on millions of verified user reviews - compare and filter for whats important to you to find the best tools for your needs." source_url: "https://www.capterra.com/email-security-software/" page_type: "category" language: "en" --- # Best Email Security Software [4.9 (50)](https://www.capterra.com/p/206740/Libraesva-Email-Security/reviews/) Protect your business from disruption, financial loss and reputational damage. [Learn more about Libraesva Email Security](https://www.capterra.com/p/206740/Libraesva-Email-Security/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting [4.9 (12)](https://www.capterra.com/p/178083/CLEARNETWORK/#reviews) Malicious email is a major threat. ContentCatcher protects your organization from phishing, spam, ransomware, URLs, attachments & more. [Learn more about ContentCatcher](https://www.capterra.com/p/178083/CLEARNETWORK/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting [4.8 (25)](https://www.capterra.com/p/185271/EasyDMARC/reviews/) EasyDMARC is a cloud-native B2B solution for securing customers' domain and email infrastructure. [Learn more about EasyDMARC](https://www.capterra.com/p/185271/EasyDMARC/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting [4.5 (8)](https://www.capterra.com/p/247834/Agari-Phishing-Defense/#reviews) Fortra's Agari Phishing Defense stops sophisticated email attacks from being delivered to employee inboxes. [Learn more about Fortra's Cloud Email Protection](https://www.capterra.com/p/247834/Agari-Phishing-Defense/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting 0.0 (0) Fortra's Agari Brand Protection can automate and simplify DMARC email authentication to protect against brand attacks. [Learn more about Fortra’s DMARC Protection](https://www.capterra.com/p/247907/Agari-Brand-Protection/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting [5.0 (20)](https://www.capterra.com/p/218859/Trustifi/#reviews) Email security solution that helps manage threat detection, regulatory compliance, data encryption, whitelisting/blacklisting, & more. [Learn more about Trustifi](https://www.capterra.com/p/218859/Trustifi/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting [5.0 (1)](https://www.capterra.com/p/250406/Heimdal-Email-Security/#reviews) A versatile email protection solution that combines Office 365 support with proprietary threat prevention in the cloud and on-premise. [Learn more about Heimdal Email Security](https://www.capterra.com/p/250406/Heimdal-Email-Security/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting [4.5 (39)](https://www.capterra.com/p/227959/Virtru/reviews/) Virtru's flexible, easy-to-use, and trusted end-to-end encryption technologies govern access to data throughout its full lifecycle. [Learn more about Virtru](https://www.capterra.com/p/227959/Virtru/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting [## ESET Endpoint Security](https://www.capterra.com/p/151915/ESET-Endpoint-Security/) [4.7 (1171)](https://www.capterra.com/p/151915/ESET-Endpoint-Security/reviews/) Advanced email security for organizations with 250+ employees protecting against data breaches and cyber threats across devices. [Learn more about ESET Endpoint Security](https://www.capterra.com/p/151915/ESET-Endpoint-Security/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting 82% recommend this product [## Zoho Mail](https://www.capterra.com/p/174694/Zoho-Mail/) [4.5 (1068)](https://www.capterra.com/p/174694/Zoho-Mail/reviews/) Zoho Mail is a secure, encrypted, and enterprise-ready email solution, a suite of apps tailor-made for your organization's needs.  [Learn more about Zoho Mail](https://www.capterra.com/p/174694/Zoho-Mail/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting 82% recommend this product [## SendGrid](https://www.capterra.com/p/204113/SendGrid/) [4.2 (753)](https://www.capterra.com/p/204113/SendGrid/reviews/) SendGrid is a cloud-based email API, delivery and marketing platform that helps businesses manage email communication needs. [Learn more about SendGrid](https://www.capterra.com/p/204113/SendGrid/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting [## SpamTitan](https://www.capterra.com/p/168436/SpamTitan/) [4.6 (563)](https://www.capterra.com/p/168436/SpamTitan/reviews/) SpamTitan is a cloud based email security solution. Easy to use and very effective blocking Email-Spam, malware and phishing attacks. [Learn more about SpamTitan](https://www.capterra.com/p/168436/SpamTitan/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting 84% recommend this product [## Cloudflare](https://www.capterra.com/p/155191/Cloudflare/) [4.7 (524)](https://www.capterra.com/p/155191/Cloudflare/reviews/) Cloudflare is a web performance and security company on a mission to build a better Internet. [Learn more about Cloudflare](https://www.capterra.com/p/155191/Cloudflare/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting 88% recommend this product [## Hoxhunt](https://www.capterra.com/p/233248/Hoxhunt/) [4.9 (338)](https://www.capterra.com/p/233248/Hoxhunt/reviews/) Hoxhunt automatically assigns quick, gamified training that dramatically increases engagement and builds long-term security behaviors. [Learn more about Hoxhunt](https://www.capterra.com/p/233248/Hoxhunt/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting 97% recommend this product [## AVG Internet Security Business Edition](https://www.capterra.com/p/199318/AVG-Internet-Security-Business-Edition/) [4.3 (286)](https://www.capterra.com/p/199318/AVG-Internet-Security-Business-Edition/reviews/) Protect your business from viruses, ransomware, and email threats including spam, phishing, and more. [Learn more about AVG Internet Security Business Edition](https://www.capterra.com/p/199318/AVG-Internet-Security-Business-Edition/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting [## Microsoft Defender for Office 365](https://www.capterra.com/p/219685/Microsoft-Defender-for-Office-365/) [4.6 (241)](https://www.capterra.com/p/219685/Microsoft-Defender-for-Office-365/reviews/) Microsoft Defender for Office 365 protects all of Office 365 against advanced threats. [Learn more about Microsoft Defender for Office 365](https://www.capterra.com/p/219685/Microsoft-Defender-for-Office-365/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting [## eM Client](https://www.capterra.com/p/160239/eM-Client/) [4.2 (188)](https://www.capterra.com/p/160239/eM-Client/reviews/) Desktop email client that supports S/MIME and PGP encryption and signatures and secure connection via TLS 1.2 and 1.3 [Learn more about eM Client](https://www.capterra.com/p/160239/eM-Client/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting [## Symantec Email Security.cloud](https://www.capterra.com/p/168448/Email-Security-cloud/) [4.5 (159)](https://www.capterra.com/p/168448/Email-Security-cloud/reviews/) Threat and anti-spam protection system intended to defend your email from phishing, ransomware, and business email compromise. [Learn more about Symantec Email Security.cloud](https://www.capterra.com/p/168448/Email-Security-cloud/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting [## Zerospam](https://www.capterra.com/p/173157/ZEROSPAM/) [4.8 (135)](https://www.capterra.com/p/173157/ZEROSPAM/reviews/) Zerospam The AI-driven email security solution [Learn more about Zerospam](https://www.capterra.com/p/173157/ZEROSPAM/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting 94% recommend this product [## Proton Mail](https://www.capterra.com/p/201276/ProtonMail/) [4.5 (123)](https://www.capterra.com/p/201276/ProtonMail/reviews/) ProtonMail is the world's largest secure email provider. We protect the data and communications of millions of organizations. [Learn more about Proton Mail](https://www.capterra.com/p/201276/ProtonMail/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting [## Selzy](https://www.capterra.com/p/255420/Selzy/) [4.8 (116)](https://www.capterra.com/p/255420/Selzy/reviews/) Selzy is an ecosystem of easy-to-use marketing automation tools that helps small and medium businesses grow. [Learn more about Selzy](https://www.capterra.com/p/255420/Selzy/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting 91% recommend this product [## NeoCertified](https://www.capterra.com/p/155842/NeoCertified-Secure-Email/) [4.9 (104)](https://www.capterra.com/p/155842/NeoCertified-Secure-Email/reviews/) Secure email encryption for businesses of all industries, including healthcare, finance, legal, education, and non-profit. [Learn more about NeoCertified](https://www.capterra.com/p/155842/NeoCertified-Secure-Email/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting 98% recommend this product [## Cypherdog Encryption](https://www.capterra.com/p/268012/Cypherdog-E-mail-Encryption/) [4.8 (103)](https://www.capterra.com/p/268012/Cypherdog-E-mail-Encryption/reviews/) Cypherdog's Encryption solution provides complete email protection by encrypting all email messages and attachments. [Learn more about Cypherdog Encryption](https://www.capterra.com/p/268012/Cypherdog-E-mail-Encryption/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting 94% recommend this product [## DNSFilter](https://www.capterra.com/p/156036/DNSFilter/) [4.8 (88)](https://www.capterra.com/p/156036/DNSFilter/reviews/) DNS-based threat protection & content filtering. Driven by realtime A.I. Built for MSPs and Enterprise. [Learn more about DNSFilter](https://www.capterra.com/p/156036/DNSFilter/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting [## MimeCast Email Security](https://www.capterra.com/p/119826/MimeCast-Email-Security/) [4.3 (80)](https://www.capterra.com/p/119826/MimeCast-Email-Security/reviews/) Protect emails by mitigating risk and utilizing email encryption and threat protection [Learn more about MimeCast Email Security](https://www.capterra.com/p/119826/MimeCast-Email-Security/) Email Security features reviewers most value AI Copilot Alerts/Escalation Email Attachment Protection Encryption Fraud Detection Policy Management Spam Blocker Spam Quarantine Whitelisting/Blacklisting Page 1 of 5 ## Top-rated software of 2026 ### Fill out the form and we'll send a list of the top-rated software based on real user reviews directly to your inbox. Filter (186) Products: Sort By: Featured Partners * * * Plan Type Free Trial Popular 85% of professionals opt for a 30-day trial before the software purchase Other subsciption plans: Free Version Monthly Subscription Annual Subscription One-Time License Key Features All key features Popular We have selected the most important and critical features as defined by Capterra user reviews AI Copilot [Alerts/Escalation](https://www.capterra.com/email-security-software/features/alerts-escalation/) [Email Attachment Protection](https://www.capterra.com/email-security-software/features/email-attachment-protection/) [Email Filtering](https://www.capterra.com/email-security-software/features/email-filtering/) [Email Management](https://www.capterra.com/email-security-software/features/email-management/) [Encryption](https://www.capterra.com/email-security-software/features/encryption/) Fraud Detection Generative AI [Phishing Protection](https://www.capterra.com/email-security-software/features/phishing-protection/) [Policy Management](https://www.capterra.com/email-security-software/features/policy-management/) [Reporting/Analytics](https://www.capterra.com/email-security-software/features/reporting-analytics/) [Spam Blocker](https://www.capterra.com/email-security-software/features/spam-blocker/) [Spam Detection](https://www.capterra.com/email-security-software/features/spam-detection/) [Spam Quarantine](https://www.capterra.com/email-security-software/features/spam-quarantine/) [Threat Protection](https://www.capterra.com/email-security-software/features/threat-protection/) [Threat Response](https://www.capterra.com/email-security-software/features/threat-response/) [Whitelisting/Blacklisting](https://www.capterra.com/email-security-software/features/whitelisting-blacklisting/) Deployment Cloud, SaaS, Web-Based Desktop Mac Desktop Windows Desktop Linux On-Premise Windows On-Premise Linux Desktop Chromebook Mobile Android Mobile iPhone Mobile iPad Related Software Category: [Anti-spam Software](https://www.capterra.com/anti-spam-software/)[Website Accessibility Software](https://www.capterra.com/website-accessibility-software/)[VPN Software](https://www.capterra.com/vpn-software/)[Firewall Software](https://www.capterra.com/firewall-software/)[Website Security Software](https://www.capterra.com/website-security-software/)[DDoS Protection Software](https://www.capterra.com/ddos-protection-software/)[Network Access Control (NAC) Software](https://www.capterra.com/network-access-control-software/)[Secure Email Gateway Software](https://www.capterra.com/secure-email-gateway-software/)[Cloud Access Security Broker (CASB) Software](https://www.capterra.com/cloud-access-security-broker-casb-software/) I'm looking for Email Security Software that is: [Free](https://www.capterra.com/email-security-software/s/free/)