Buyer's guide

Best Email Security Platforms software

Advanced email security solutions that protect against phishing, malware, and business email compromise. Open any profile for real pricing, compliance, and buyer-fit detail, or jump into the email security platforms directory to filter by industry, company size, and certifications.

20 profiled toolsUpdated 2026

1
Clerk
Customer Identity and Access Management
Clerk is a developer-first authentication and user management platform providing drop-in components for sign-in, sign-up, user profiles, organizations, and multi-factor authentication.
Deal available
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2
Material Security
Email Security
Material Security secures cloud email and collaboration environments with controls built around account compromise, sensitive data exposure, and modern phishing risk.
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3
Mimecast
Email Security Platforms
Mimecast provides email security, archiving, and continuity solutions protecting organizations from phishing, ransomware, and business email compromise.
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4
Fortinet
Cybersecurity
Fortinet provides enterprise-grade cybersecurity solutions including next-generation firewalls (FortiGate), SD-WAN, endpoint protection, and SIEM. Its Security Fabric platform delivers integ…
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5
Bitdefender
Endpoint Protection
Bitdefender provides enterprise cybersecurity solutions including endpoint protection, extended detection and response, and managed detection and response for organizations worldwide.
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6
Abnormal Security
Email Security Platforms
Abnormal Security uses behavioral AI to detect and prevent email attacks including business email compromise, phishing, and account takeover.
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7
Heimdal
Cybersecurity
Heimdal provides a unified cybersecurity platform with advanced DNS security that uses machine learning and AI-powered predictive capabilities to block threats at the DNS layer.
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8
IRONSCALES
Email Security Platforms
IRONSCALES provides AI-powered email security with phishing simulation, awareness training, and automated incident response for enterprises.
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9
Better Auth
Authentication & Identity
Better Auth is a framework-agnostic TypeScript authentication library providing email/password, social login, two-factor, and organization management with plugin extensibility.
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10
Instabase
Intelligent Document Processing
Instabase is an AI-powered platform for automating complex document understanding and processing workflows across enterprise unstructured data.
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11
Fortra
Cybersecurity
Fortra provides cybersecurity and automation solutions including data security, infrastructure protection, managed file transfer, and business process automation for enterprises.
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12
PhishTank
Threat Intelligence Platforms
Community-driven phishing data feed providing real-time verified phishing URLs for browsers, ISPs, and security vendors.
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13
Arcjet
Cloud-Native Application Protection
Arcjet provides security as code for developers with bot detection, rate limiting, email validation, and attack protection that integrates directly into application code.
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14
Cofense
Phishing Simulation Platforms
Cofense is a phishing defense platform combining simulated phishing campaigns, security awareness training, and real phishing threat detection and response in a unified solution.
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15
Gophish
Phishing Simulation
Gophish is a free, open-source phishing simulation framework that enables security teams to run customized phishing campaigns and measure employee susceptibility.
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16
Virtru
Data Privacy Platforms
Data-centric email encryption and privacy platform enabling end-to-end encryption for email and file sharing across Google and Microsoft platforms.
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17
Tessian
Email Security
Tessian provides AI-powered email security that prevents accidental data loss, phishing attacks, and misdirected emails by understanding human communication patterns.
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18
PreVeil
Email Security Platforms
End-to-end encrypted email and file sharing platform designed for regulated industries providing military-grade encryption without changing user workflows.
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19
Adaptive Security
Phishing Simulation Platforms
Adaptive Security is a next-generation phishing simulation platform that recreates modern attacks across email, SMS, voice, and deepfake video to prepare employees for sophisticated threats.
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20
SlashNext
Email Security Platforms
AI-powered phishing detection platform protecting against phishing attacks across email, mobile, and web messaging channels in real-time.
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21
AppRiver
Email Security
Email security and M365 services acquired by Zix and OpenText
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22
Zivver
Email Security Platforms
Secure email for regulated industries with end-to-end encryption
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23
Cryptshare
Software
German secure file transfer and email encryption platform.
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24
Gatefy
Email Security Platforms
AI-driven email security and anti-phishing platform
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25
INKY
Email Security Platforms
Cloud email security platform with computer vision and AI detecting phishing, BEC, and brand spoofing.
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26
Armorblox
Email Security Platforms
Cisco-owned natural language understanding platform for email security against BEC and phishing.
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27
Keepnet Labs
Compliance & Risk Management
Anti-phishing platform with email threat simulator
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28
EveryCloud
Email Security Platforms
Cloud email security services for SMB
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29
Graphus
Email Security Platforms
AI-driven email security platform by Kaseya providing automated phishing defense for Microsoft 365 and Google.
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30
Libraesva
Email Security Platforms
Email security gateway with URL sandboxing and DMARC
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31
DMARCLY
Email Deliverability
Affordable DMARC reporting and analysis for SMBs
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32
Paubox
Email Security
HIPAA-compliant email encryption and anti-phishing platform protecting healthcare organizations and their patient data.
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33
MailChannels
Outbound Email Platforms
Email security and relay service with SMTP API and spam filtering for hosting providers and CDNs.
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34
Kaspersky Germany
Endpoint Protection
Kaspersky's German arm for enterprise endpoint and email security.
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35
Mailfence
Email Security
Belgian secure email with OpenPGP encryption, calendar, contacts, and documents.
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36
Area 1
Software
Email security platform from Cloudflare with preemptive phishing protection
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Best email security platforms by company size

Best email security platforms for Solo / freelancer Best email security platforms for Startup (1-50)Best email security platforms for Small business (51-200)Best email security platforms for Mid-market (201-1,000)Best email security platforms for Enterprise (1,000+)

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Frequently asked

What is the best email security platforms software?

Cubbie ranks 20 profiled email security platforms tools by profile completeness, verified-vendor status, and active deals. The list above leads with the products that carry the most complete, vendor-maintained profiles.

How does Cubbie choose these email security platforms tools?

Listings are drawn from the live catalog and ordered so products with substantive, vendor-maintained profiles surface first. Cubbie does not accept payment for ranking position.

Ranked from Cubbie's live catalog, https://www.cubbie.com/best/email-security-platforms