FortiMail Email Security vs Proxmox Mail Gateway

FortiMail Email Security9.0Visit Proxmox Mail Gateway8.7Visit

Higher score FortiMail Email Security #4 in Secure Email Gateway Software 9.0/10 Pricing on request ✓ 0 of 5 features Visit Fortinet

vs

Proxmox Mail Gateway #7 in Secure Email Gateway Software 8.7/10 Open source ✓ 0 of 5 features Visit Proxmox

• FortiMail Email Security fits best

  Organizations needing hybrid email security controls

• Proxmox Mail Gateway fits best

  Teams self-hosting an inbound and outbound mail gateway

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Side by side

Feature	FortiMail Email Security 9.0/10 Visit ↗	Proxmox Mail Gateway 8.7/10 Visit ↗
At a glance
Editor score	9.0	8.7
Ranking	#4 in Secure Email Gateway Software	#7 in Secure Email Gateway Software
Best for	Organizations needing hybrid email security controls	Teams self-hosting an inbound and outbound mail gateway
Pricing model	Paid	Paid
Starting price	Pricing on request	€190/yr
Free plan	Not checked yet	—
Free trial	—	—
Deployment	Self-hosted	Cloud, Desktop, Self-hosted
Integrations	6 integrations	5 integrations
Features FortiMail Email Security 0/5 · Proxmox Mail Gateway 0/5
Malware sandboxing	Not checked yet	Not checked yet
Outbound DLP	Not checked yet	Not checked yet
Email encryption	Not checked yet	Not checked yet
Continuity spooling	Not checked yet	Not checked yet
Email archiving	Not checked yet	Not checked yet
Specs
Deployment	Not checked yet	Not checked yet
Our review
Pros	Filters inbound threats and outbound email, including impersonation and spoofing. Adds sandbox analysis, data loss prevention, and email encryption. Supports Microsoft 365, Google Workspace, and Fortinet Security Fabric integrations.	Scans inbound and outbound email for spam and viruses Offers configurable SMTP, content, and policy rules with quarantine Supports high-availability clustering and centralized configuration
Cons	Numeric pricing is not published; buyers need to contact sales. Deployment options span appliances, virtual machines, and cloud services. Its feature set may exceed the needs of teams seeking basic spam filtering.	Requires self-hosting between the firewall and internal mail server Annual subscriptions are priced per host, not per user Advanced impersonation protection and malware sandboxing are not verified
Our verdict	FortiMail Email Security is Fortinet’s email protection platform for organizations managing inbound and outbound threats across on-premises, cloud, or hybrid environments. It combines malware and spam protection with impersonation… Read the review →	Proxmox Mail Gateway is an open-source mail proxy that sits between a firewall and an internal mail server to inspect incoming and outgoing email. It is aimed at teams that want to self-host an SMTP security gateway, with deployment on… Read the review →

Strengths and trade-offs

• FortiMail Email Security — where it wins

  • Filters inbound threats and outbound email, including impersonation and spoofing.
  • Adds sandbox analysis, data loss prevention, and email encryption.
  • Supports Microsoft 365, Google Workspace, and Fortinet Security Fabric integrations.

  Where it doesn't

  • Numeric pricing is not published; buyers need to contact sales.
  • Deployment options span appliances, virtual machines, and cloud services.
  • Its feature set may exceed the needs of teams seeking basic spam filtering.

• Proxmox Mail Gateway — where it wins

  • Scans inbound and outbound email for spam and viruses
  • Offers configurable SMTP, content, and policy rules with quarantine
  • Supports high-availability clustering and centralized configuration

  Where it doesn't

  • Requires self-hosting between the firewall and internal mail server
  • Annual subscriptions are priced per host, not per user
  • Advanced impersonation protection and malware sandboxing are not verified

• FortiMail Email Security9.0/10 · Pricing on request

  Hybrid email security with inbound and outbound controls, sandboxing, DLP, and encryption.

  Visit FortinetFull verdict →
• Proxmox Mail Gateway8.7/10 · Open source

  A self-hosted SMTP gateway with broad filtering controls and annual per-host support plans.

  Visit ProxmoxFull verdict →