Best FortiMail Email Security Alternatives in 2026
The top FortiMail Email Security alternatives are Sublime Security, Sophos Email and Cloudflare Email Security: 15 email security gateways our editors would look at instead of FortiMail Email Security, in our ranking order.
FortiMail Email Security: A broad email security platform suited to Fortinet-centered hybrid environments. Where it falls short: pricing requires contact with sales.
Switching from FortiMail Email Security? For most email security gateways buyers the best FortiMail Email Security alternative is Sublime Security, built for teams wanting strong value and customization.
Why People Look for a FortiMail Email Security Alternative
- Pricing requires contact with sales
- The broad feature set may exceed narrower email security needs
- Some deployment options require alignment with Fortinet infrastructure
Quick Picks by What You Need
- Best overallSublime Security9.4
Teams wanting strong value and customization
Visit Sublime Security - Best free optionSublime Security9.4
Has a free plan
Visit Sublime Security
All 15 FortiMail Email Security Alternatives, Ranked
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.
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Best forTeams wanting strong value and customization
- Better than FortiMail Email Security:
- Editor score 9.4 vs 8.2
A customizable email security platform with unusually broad protection in its free Core plan.
- Malware sandboxing
- Impersonation protection
- Google Workspace support
9.4/10★★★★★Try Sublime Security -
Best forMicrosoft 365 and Google Workspace security
- Better than FortiMail Email Security:
- Editor score 9.2 vs 8.2
A broad cloud gateway for Microsoft 365 and Google Workspace email protection.
- Malware sandboxing
- Impersonation protection
- Google Workspace support
9.2/10★★★★★Visit Sophos Email -
Best forFlexible cloud and hybrid deployments
- Better than FortiMail Email Security:
- Editor score 9.0 vs 8.2
A flexible email gateway for organizations needing layered inbound and outbound protection.
- Malware sandboxing
- Impersonation protection
- Google Workspace support
9.0/10★★★★☆Visit Cloudflare -
Best forBehavioral AI threat detection
- Better than FortiMail Email Security:
- Editor score 8.9 vs 8.2
Behavioral AI protection across email, collaboration tools, and connected security systems.
- Malware sandboxing
- Impersonation protection
- Google Workspace support
8.9/10★★★★☆Visit Darktrace -
Best forOrganizations needing layered email defenses
- Better than FortiMail Email Security:
- Editor score 8.8 vs 8.2
Layered protection for email, collaboration apps, account takeover, and data loss.
- Malware sandboxing
- Impersonation protection
- Google Workspace support
8.8/10★★★★☆Visit Check Point -
Best forMature all-around email protection
- Better than FortiMail Email Security:
- Editor score 8.7 vs 8.2
A broad email security gateway for organizations needing layered protection and policy control.
- Malware sandboxing
- Impersonation protection
- Google Workspace support
8.7/10★★★★☆Visit Mimecast -
Best forHybrid deployments with advanced analysis
- Better than FortiMail Email Security:
- Editor score 8.6 vs 8.2
A broad email gateway for organizations needing advanced inbound and outbound threat analysis.
- Malware sandboxing
- Impersonation protection
- Google Workspace support
8.6/10★★★★☆Visit Libraesva -
Best forBehavioral BEC and vendor-fraud defense
- Better than FortiMail Email Security:
- Editor score 8.5 vs 8.2
A focused cloud gateway for BEC, phishing, vendor fraud, and outbound DLP.
- Impersonation protection
- Google Workspace support
- Microsoft 365 support
8.5/10★★★★☆Visit Abnormal AI -
Best forUser-aware phishing and impersonation defense
- Better than FortiMail Email Security:
- Editor score 8.4 vs 8.2
A broad, user-aware email security platform with quote-based pricing.
- Impersonation protection
- Google Workspace support
- Microsoft 365 support
8.4/10★★★★☆Visit INKY -
Best forMicrosoft 365 protection suites
- Better than FortiMail Email Security:
- Editor score 8.3 vs 8.2
A broad Microsoft 365 protection suite with layered email security and data recovery.
- Malware sandboxing
- Impersonation protection
- Microsoft 365 support
Pricing on request · 14-day trial Our Hornetsecurity 365 Total Protection verdict → Visit Hornetsecurity8.3/10★★★★☆Visit Hornetsecurity -
Best forManaged protection with incident response
Layered cloud email protection for Microsoft 365, Google Workspace, and other mail services.
- Impersonation protection
- Google Workspace support
- Microsoft 365 support
8.1/10★★★★☆Visit Fortinet -
Best forPhishing-focused protection with automation
A phishing-focused gateway for Microsoft 365 and Google Workspace environments.
- Malware sandboxing
- Impersonation protection
- Google Workspace support
8.0/10★★★★☆Visit IRONSCALES -
Best forStraightforward cloud or hybrid filtering
A broad email security gateway for organizations needing inbound and outbound control.
- Malware sandboxing
- Impersonation protection
- Google Workspace support
7.9/10★★★★☆Visit LevelBlue -
Best forAppliance-style content inspection
A broad inspection and governance gateway for organizations securing inbound and outbound email.
- Malware sandboxing
- Google Workspace support
- Microsoft 365 support
7.8/10★★★★☆Visit Fortra -
Best forCloud email teams needing established filtering
Broad inbound and outbound protection for Microsoft 365, Google Workspace, and Exchange.
- Malware sandboxing
- Impersonation protection
- Google Workspace support
7.7/10★★★★☆Visit Broadcom
FortiMail Email Security Alternatives: Common Questions
What is the best alternative to FortiMail Email Security?
Sublime Security: #1 in our Email Security Gateways ranking, with an editor score of 9.4 out of 10. A customizable email security platform with unusually broad protection in its free Core plan.
Is there a free alternative to FortiMail Email Security?
Yes. Sublime Security has a free plan or a free tier.
Why do people look for FortiMail Email Security alternatives?
Pricing requires contact with sales; The broad feature set may exceed narrower email security needs; Some deployment options require alignment with Fortinet infrastructure.
How do I switch from FortiMail Email Security?
Export your data from FortiMail Email Security (most tools have an export in their settings). Sign up for the alternative; start on its free plan or trial if it has one. Import your export and set up the integrations your team relies on. Run both side by side for a short while, then cancel FortiMail Email Security.
How to Switch from FortiMail Email Security
- Export your data from FortiMail Email Security (most tools have an export in their settings).
- Sign up for the alternative; start on its free plan or trial if it has one.
- Import your export and set up the integrations your team relies on.
- Run both side by side for a short while, then cancel FortiMail Email Security.
FortiMail Email Security vs Each Alternative
| # | Tool | Free plan | Paid from | Outbound filtering | Impersonation protection | Malware sandboxing | Deployment model | Score |
|---|---|---|---|---|---|---|---|---|
| 11 | FortiMail Email Security | Yes | Yes | Yes | Hybrid | 8.2 | ||
| 1 | Sublime Security | Yes | Yes | Yes | Yes | Hybrid | 9.4 | |
| 2 | Sophos Email | No | Yes | Yes | Yes | Cloud | 9.2 | |
| 3 | Cloudflare Email Security | No | Yes | Yes | Yes | Hybrid | 9.0 | |
| 4 | Darktrace / EMAIL | No | Yes | Yes | Yes | Cloud | 8.9 | |
| 5 | Check Point Email Security | No | Yes | Yes | Yes | Hybrid | 8.8 | |
| 6 | Mimecast Secure Email Gateway | No | Yes | Yes | Yes | Cloud | 8.7 | |
| 7 | Libraesva Email Security | No | Yes | Yes | Yes | Hybrid | 8.6 | |
| 8 | Abnormal Email Security | Yes | Yes | Cloud | 8.5 | |||
| 9 | INKY Email Security | Yes | Yes | Cloud | 8.4 | |||
| 10 | Hornetsecurity 365 Total Protection | No | Yes | Yes | Yes | Hybrid | 8.3 | |
| 11 | Perception Point Advanced Email Security | Yes | Yes | Cloud | 8.1 | |||
| 12 | IRONSCALES Email Protect | No | No | Yes | Yes | Cloud | 8.0 | |
| 13 | Trustwave Secure Email Gateway | Yes | Yes | Yes | 7.9 | |||
| 14 | Fortra Secure Email Gateway | Yes | Yes | Appliance | 7.8 | |||
| 15 | Symantec Email Security.cloud | Yes | Yes | Yes | Cloud | 7.7 |
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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