Network, Email & Cloud Security
Email Security software
Gateways and API-based tools that stop phishing, business email compromise and malware before it reaches inboxes.
- Vendors to know
- 10
- Reviews
- 0
- Comparisons
- 0
- Guides and articles
- 0
Email Security vendors to know
Established leaders, challengers, newer entrants and the tools practitioners recommend to each other. Being listed is not a ranking or an endorsement, and no vendor paid to appear.
- Established leader
Proofpoint Email Security and Protection
Named a Leader in the Gartner Magic Quadrant for Email Security for the second consecutive year, ranked highest on ability to execute.
- Established leader
Mimecast Advanced Email Security
Named a Leader in the 2025 Gartner Magic Quadrant for Email Security; unveiled the Agent Risk Center for AI and human risk on August 3, 2026.
- Established leader
Abnormal AI
Abnormal Security (Abnormal AI)
Named a Leader and placed furthest on Completeness of Vision in the 2025 Gartner Magic Quadrant for Email Security; uses behavioral AI to detect BEC.
- Established leader
Microsoft Defender for Office 365
Named a Leader in the 2025 Gartner Magic Quadrant for Email Security, a natural choice for organizations already on Microsoft 365.
- Challenger
Cisco Secure Email Threat Defense
Praised in user reviews for effective spam and phishing protection, though noted as costlier than some alternatives.
- Challenger
Barracuda Email Protection
Barracuda Networks
Widely deployed MSP-friendly email security suite combining gateway filtering, impersonation protection and incident response.
- Emerging
IRONSCALES
AI-driven, self-learning email security platform popular with MSPs for combining automated phishing detection with security awareness training.
- Community favourite
SpamTitan
TitanHQ
Frequently cited as a top MSP email security pick for blocking phishing, spam, malware and ransomware with an easy-to-manage interface.
- Community favourite
N-able Mail Assure
MSP-oriented email protection and archiving platform built on collective threat intelligence from a large partner network.
- Emerging
Cloudflare Email Security
Cloud-native email security built on Cloudflare's Area 1 acquisition, blocking phishing, malware and business email compromise.
Reviews for this category are in progress.