The Best Secure Email Gateway Software in 2026

• 18 tools ranked
• Updated Oct 2026
• Researched from official sources
• Compare tools in this directory
• Sponsor this list

We researched secure email gateway products through official websites, including pricing pages, plan tables and product documentation. Rankings reflect the category’s core protection job, value for money and verified capabilities such as filtering, malware analysis, policy controls and continuity features, helping buyers shortlist secure email gateway software.

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

The full ranking 18 tools, best first

1. 1
   
   Mimecast Email Security 9.3

   Best forTeams needing mature cloud email security

   A cloud email gateway with MX and API protection, sandboxing, URL analysis, and continuity options.

   Pricing on request · 30-day trial Our Mimecast Email Security verdict → + Compare Visit MimecastFor vendors Sponsor this spot · #1 · $149/mo →
   9.3/10★★★★★

   Visit Mimecast
2. 2
   
   Check Point Email Security 9.2

   Best forOrganizations protecting email and collaboration apps

   Email and collaboration protection with sandboxing, attachment sanitization, and DLP.

   Pricing on request · 14-day trial Our Check Point Email Security verdict → + Compare Visit Check PointFor vendors Sponsor this spot · #2 · $99/mo →
   9.2/10★★★★★

   Visit Check Point
3. 3
   
   Sophos Email 9.1

   Best forOrganizations using Microsoft 365 or Google Workspace

   Broad email protection for organizations that need threat detection and user controls.

   Pricing on request · 30-day trial Our Sophos Email verdict → + Compare Visit SophosFor vendors Sponsor this spot · #3 · $79/mo →
   9.1/10★★★★★

   Visit Sophos
4. 4
   
   FortiMail Email Security 9.0

   Best forOrganizations needing hybrid email security controls

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

   Pricing on request Our FortiMail Email Security verdict → + Compare Visit FortinetFor vendors Sponsor this spot · #4 · $69/mo →
   9.0/10★★★★☆

   Visit Fortinet
5. 5
   
   Forcepoint Email Security Cloud 8.9

   Best forMid-market and enterprise cloud email protection

   Cloud email filtering with sandboxing, quarantine workflows and centralized policies.

   Pricing on request Our Forcepoint Email Security Cloud verdict → + Compare Visit ForcepointFor vendors Sponsor this spot · #5 · $59/mo →
   8.9/10★★★★☆

   Visit Forcepoint
6. 6
   
   Barracuda Message Archiver 8.8

   Best forOrganizations prioritizing email archiving and eDiscovery

   A focused archive for retention and legal discovery, not a gateway threat-filtering tool.

   Pricing on request Our Barracuda Message Archiver verdict → + Compare Visit Barracuda
   8.8/10★★★★☆

   Visit Barracuda
7. 7
   
   Proxmox Mail Gateway 8.7

   Best forTeams self-hosting an inbound and outbound mail gateway

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

   Open source Our Proxmox Mail Gateway verdict → + Compare Visit Proxmox
   8.7/10★★★★☆

   Visit Proxmox
8. 8
   
   SpamTitan Gateway 8.6

   Best forBudget-conscious teams needing gateway threat filtering

   A low-cost gateway combining multilayer spam checks, dual antivirus, sandboxing, and outbound scanning.

   From $1.95/user/mo (annual) Our SpamTitan Gateway verdict → + Compare Visit SpamTitan
   8.6/10★★★★☆

   Visit SpamTitan
9. 9
   MS
   MDaemon SecurityGateway 8.5

   Best forTeams needing email filtering, continuity and archiving

   A gateway for filtering threats and protecting email flow across hosted or self-hosted setups.

   • Outbound DLP
   • Email encryption
   • Continuity spooling

   30-day trial Our MDaemon SecurityGateway verdict → + Compare Visit MDaemon
   8.5/10★★★★☆

   Visit MDaemon
10. 10
    
    Hornetsecurity 365 Total Protection 8.4

    Best forMicrosoft 365 teams wanting bundled security services

    A broad Microsoft 365 security bundle, with plan-based features and sales-led pricing.

    Pricing on request · 14-day trial Our Hornetsecurity 365 Total Protection verdict → + Compare Visit Hornetsecurity
    8.4/10★★★★☆

    Visit Hornetsecurity
11. 11
    
    Mailinblack Protect 8.3

    Best forOrganizations seeking straightforward email threat filtering

    Email threat filtering with quarantine, link analysis and cloud or self-hosted deployment.

    Pricing on request Our Mailinblack Protect verdict → + Compare Visit Mailinblack
    8.3/10★★★★☆

    Visit Mailinblack
12. 12
    
    Libraesva Email Security 7.9

    Best forTeams seeking AI-led email threat analysis

    A broad email gateway combining semantic AI, behavioral detection, and threat remediation.

    Pricing on request · 30-day trial Our Libraesva Email Security verdict → + Compare Visit Libraesva
    7.9/10★★★★☆

    Visit Libraesva
13. 13
    SB
    SpamHero Business Email Security 7.8

    Best forSmall domains seeking affordable cloud email filtering

    Affordable domain-based filtering with quarantine, archiving and outbound controls.

    30-day trial Our SpamHero Business Email Security verdict → + Compare Visit SpamHero
    7.8/10★★★★☆

    Visit SpamHero
14. 14
    
    Cloudflare Gateway 5.0

    Best forTeams seeking web, DNS, and network filtering

    Useful for traffic filtering, but not designed as an email gateway in its described scope.

    Free plan Our Cloudflare Gateway verdict → + Compare Visit Cloudflare
    5.0/10★★☆☆☆

    Visit Cloudflare
15. 15
    KC
    Kerio Connect 4.8

    Best forSmall and midsize teams needing hosted or self-managed email

    A mail server suite with security controls, not a dedicated email gateway.

    Pricing on request · 30-day trial Our Kerio Connect verdict → + Compare Visit Kerio Connect
    4.8/10★★☆☆☆

    Visit Kerio Connect
16. 16
    
    Microsoft Defender for Business 4.6

    Best forSmall and midsize businesses protecting endpoints

    Endpoint protection for business devices, not a secure email gateway.

    30-day trial Our Microsoft Defender for Business verdict → + Compare Visit Microsoft
    4.6/10★★☆☆☆

    Visit Microsoft
17. 17
    
    Symantec IT Management Suite 3.6

    Best forMid-market and enterprise endpoint management

    A broad endpoint-management suite, not a secure email gateway.

    Pricing on request Our Symantec IT Management Suite verdict → + Compare Visit Broadcom
    3.6/10★★☆☆☆

    Visit Broadcom
18. 18
    
    Trend Vision One Container Security 3.4

    Best forDevOps and enterprise container security teams

    A container security platform, not a secure email gateway.

    Pricing on request · 30-day trial Our Trend Vision One Container Security verdict → + Compare Contact Trend Micro
    3.4/10★★☆☆☆

    Contact Trend Micro

No tools match those filters.

Compare at a glance

#	Tool	Free plan	Paid from	Score
1	Mimecast Email Security	No		9.3
2	Check Point Email Security	No		9.2
3	Sophos Email	No		9.1
4	FortiMail Email Security			9.0
5	Forcepoint Email Security Cloud			8.9
6	Barracuda Message Archiver	No		8.8
7	Proxmox Mail Gateway	No	€190/yr	8.7
8	SpamTitan Gateway	No	$1.95/user/mo	8.6
9	MSMDaemon SecurityGateway	No	$0.40/user/mo	8.5
10	Hornetsecurity 365 Total Protection	No		8.4
11	Mailinblack Protect			8.3
12	Libraesva Email Security	No		7.9
13	SBSpamHero Business Email Security	No	$7/site/mo	7.8
14	Cloudflare Gateway	Yes		5.0
15	KCKerio Connect	No		4.8
16	Microsoft Defender for Business	No	$3/user/mo	4.6
17	Symantec IT Management Suite			3.6
18	Trend Vision One Container Security	No		3.4

Head-to-head All 20 comparisons →

• Mimecast Email Security vs Check Point Email Security
• Mimecast Email Security vs FortiMail Email Security
• Mimecast Email Security vs SpamTitan Gateway
• Check Point Email Security vs FortiMail Email Security
• Check Point Email Security vs Forcepoint Email Security Cloud
• Check Point Email Security vs Barracuda Message Archiver
• Check Point Email Security vs Proxmox Mail Gateway
• Check Point Email Security vs SpamTitan Gateway
• Sophos Email vs FortiMail Email Security

How we rank secure email gateway software

Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated 7 Oct 2026 · How we research and update