# Best Secure Email Gateway Software 2026 | Capterra > Find the top Secure Email Gateway 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: https://www.capterra.com/secure-email-gateway-software --- # Best Secure Email Gateway Software For more information consult our [Secure Email Gateway Buyers Guide](#buyers-guide-content) [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/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection 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/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## Zoho Mail](https://www.capterra.com/p/174694/Zoho-Mail/) [4.5 (1063)](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/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting 81% recommend this product [## SpamTitan](https://www.capterra.com/p/168436/SpamTitan/) [4.6 (563)](https://www.capterra.com/p/168436/SpamTitan/reviews/) SpamTitan is a cloud based Anti Spam email filter. Easy to use and very effective blocking Email-Spam, malware and phishing attacks. [Learn more about SpamTitan](https://www.capterra.com/p/168436/SpamTitan/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting 84% recommend this product [## SMTP2GO](https://www.capterra.com/p/166646/SMTP2GO/) [4.9 (178)](https://www.capterra.com/p/166646/SMTP2GO/reviews/) Make email the best part of your day with SMTP2GO. We get your emails where they need to go - lightning-fast and with no detours! [Learn more about SMTP2GO](https://www.capterra.com/p/166646/SMTP2GO/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting 91% recommend this product [## 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/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection 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/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting 94% recommend this product [## 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/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection 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/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting 98% recommend this product [## 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/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## ALTOSPAM](https://www.capterra.com/p/176264/ALTOSPAM/) [4.8 (73)](https://www.capterra.com/p/176264/ALTOSPAM/reviews/) Cloud-based security solution that helps businesses of all sizes secure emails against spam, viruses, ransomware, scams and phishing. [Learn more about ALTOSPAM](https://www.capterra.com/p/176264/ALTOSPAM/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## Delivery Trust](https://www.capterra.com/p/119796/Delivery-Trust/) [4.8 (66)](https://www.capterra.com/p/119796/Delivery-Trust/reviews/) Delivery Trust enables two-way secured communication without recipients of your secured messages having to download or register [Learn more about Delivery Trust](https://www.capterra.com/p/119796/Delivery-Trust/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## Inxmail](https://www.capterra.com/p/163590/Inxmail/) [4.2 (64)](https://www.capterra.com/p/163590/Inxmail/reviews/) Inxmail is the service-oriented tech specialist for secure, data-driven communication in email marketing. [Learn more about Inxmail](https://www.capterra.com/p/163590/Inxmail/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## Mailock](https://www.capterra.com/p/232260/Mailock/) [4.7 (63)](https://www.capterra.com/p/232260/Mailock/reviews/) Reinforce email security with encrypted communications and multi-factor recipient authentication. [Learn more about Mailock](https://www.capterra.com/p/232260/Mailock/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## Avanan](https://www.capterra.com/p/170001/Avanan-Cloud-Security-Platform/) [4.8 (51)](https://www.capterra.com/p/170001/Avanan-Cloud-Security-Platform/reviews/) In just one click, secure Microsoft 365, Google Workspaces, Slack, Teams and more against the latest threats. [Learn more about Avanan](https://www.capterra.com/p/170001/Avanan-Cloud-Security-Platform/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## Proofpoint Email Protection](https://www.capterra.com/p/175873/Proofpoint-Email-Protection/) [4.2 (45)](https://www.capterra.com/p/175873/Proofpoint-Email-Protection/reviews/) Email security management solution that helps detect & block threats through various tools like firewalls, SCSS & more. [Learn more about Proofpoint Email Protection](https://www.capterra.com/p/175873/Proofpoint-Email-Protection/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## Sealit](https://www.capterra.com/p/233582/Sealit/) [4.8 (31)](https://www.capterra.com/p/233582/Sealit/reviews/) Sealit is a Zero Trust data protection solution for end-to-end email & file encryption. Full security - just 1 click. [Learn more about Sealit](https://www.capterra.com/p/233582/Sealit/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## Paubox Email Suite](https://www.capterra.com/p/163166/Paubox/) [5.0 (29)](https://www.capterra.com/p/163166/Paubox/reviews/) Secure email for modern healthcare. Right out of the box. HITRUST CSF Certified solutions. [Learn more about Paubox Email Suite](https://www.capterra.com/p/163166/Paubox/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## Mail Assure](https://www.capterra.com/p/178413/Mail-Assure/) [4.5 (29)](https://www.capterra.com/p/178413/Mail-Assure/reviews/) Cloud-based email security designed to help your customers stay in control while safeguarding their inbound and outbound email. [Learn more about Mail Assure](https://www.capterra.com/p/178413/Mail-Assure/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## Graphus](https://www.capterra.com/p/219920/Graphus/) [4.3 (27)](https://www.capterra.com/p/219920/Graphus/reviews/) Graphus is an AI-powered cloud email security and anti- phishing solution that provides 3 layers of defense for MS365 & GSuite users. [Learn more about Graphus](https://www.capterra.com/p/219920/Graphus/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## Cisco Secure Email](https://www.capterra.com/p/175870/Cisco-Email-Security/) [4.6 (25)](https://www.capterra.com/p/175870/Cisco-Email-Security/reviews/) Email security solution designed for Office 365 that helps businesses deal with phishing, malware, ransomware, and malicious links. [Learn more about Cisco Secure Email](https://www.capterra.com/p/175870/Cisco-Email-Security/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## Trustifi](https://www.capterra.com/p/218859/Trustifi/) [4.9 (19)](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/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## Security Gateway by MDaemon](https://www.capterra.com/p/186521/Security-Gateway-for-Email-Servers/) [4.9 (15)](https://www.capterra.com/p/186521/Security-Gateway-for-Email-Servers/reviews/) SecurityGateway protects inbound & outbound messages on ALL email platforms with the latest threat detection tech & enforcement rules. [Learn more about Security Gateway by MDaemon](https://www.capterra.com/p/186521/Security-Gateway-for-Email-Servers/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## SpamHero](https://www.capterra.com/p/168948/SpamHero/) [4.5 (15)](https://www.capterra.com/p/168948/SpamHero/reviews/) Best cloud-based spam filter. Unlimited users for a low flat rate. Be spam-free in 5 minutes! Free 30 day trial. No CC required. [Learn more about SpamHero](https://www.capterra.com/p/168948/SpamHero/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting [## ContentCatcher](https://www.capterra.com/p/178083/CLEARNETWORK/) [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/) Secure Email Gateway features reviewers most value Email Attachment Protection Email Filtering Email Monitoring Phishing Protection Spam Blocker Spam Detection Spam Quarantine Threat Protection Whitelisting/Blacklisting Page 1 of 2 ## 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 (43) Products: Sort By: Sponsored * * * 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 Backup and Recovery Compliance Management Data Loss Prevention Email Attachment Protection Email Filtering Email Monitoring Generative AI Phishing Protection Policy Management Risk Alerts Spam Blocker Spam Detection Spam Quarantine SURLB/URIBL Filtering Threat Protection Vulnerability Scanning 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/)[Email Security Software](https://www.capterra.com/email-security-software/)[Cloud Access Security Broker (CASB) Software](https://www.capterra.com/cloud-access-security-broker-casb-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/)