Best Sublime Security Alternatives in 2026
The top Sublime Security alternatives are Sophos Email, Cloudflare Email Security and Darktrace / EMAIL: 15 email security gateways our editors would look at instead of Sublime Security, in our ranking order.
Sublime Security: A customizable email security platform with unusually broad protection in its free Core plan. Where it falls short: core is intended for lightweight deployments.
Switching from Sublime Security? For most email security gateways buyers the best Sublime Security alternative is Sophos Email, built for microsoft 365 and Google Workspace security.
Why People Look for a Sublime Security Alternative
- Core is intended for lightweight deployments
- Advanced controls are reserved for Enterprise
- Premium support is available with Enterprise
Quick Picks by What You Need
- Best overallSophos Email9.2
Microsoft 365 and Google Workspace security
Visit Sophos Email
All 15 Sublime 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 forMicrosoft 365 and Google Workspace security
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
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
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
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
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
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
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
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
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 forFortinet-centered security environments
A broad email security platform suited to Fortinet-centered hybrid environments.
- Malware sandboxing
- Impersonation protection
- Google Workspace support
8.2/10★★★★☆Visit Fortinet -
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
Sublime Security Alternatives: Common Questions
What is the best alternative to Sublime Security?
Sophos Email: #2 in our Email Security Gateways ranking, with an editor score of 9.2 out of 10. A broad cloud gateway for Microsoft 365 and Google Workspace email protection.
Why do people look for Sublime Security alternatives?
Core is intended for lightweight deployments; Advanced controls are reserved for Enterprise; Premium support is available with Enterprise.
How do I switch from Sublime Security?
Export your data from Sublime 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 Sublime Security.
How to Switch from Sublime Security
- Export your data from Sublime 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 Sublime Security.
Sublime Security vs Each Alternative
| # | Tool | Free plan | Paid from | Outbound filtering | Impersonation protection | Malware sandboxing | Deployment model | Score |
|---|---|---|---|---|---|---|---|---|
| 1 | Sublime Security | Yes | Yes | Yes | Yes | Hybrid | 9.4 | |
| 1 | Sophos Email | No | Yes | Yes | Yes | Cloud | 9.2 | |
| 2 | Cloudflare Email Security | No | Yes | Yes | Yes | Hybrid | 9.0 | |
| 3 | Darktrace / EMAIL | No | Yes | Yes | Yes | Cloud | 8.9 | |
| 4 | Check Point Email Security | No | Yes | Yes | Yes | Hybrid | 8.8 | |
| 5 | Mimecast Secure Email Gateway | No | Yes | Yes | Yes | Cloud | 8.7 | |
| 6 | Libraesva Email Security | No | Yes | Yes | Yes | Hybrid | 8.6 | |
| 7 | Abnormal Email Security | Yes | Yes | Cloud | 8.5 | |||
| 8 | INKY Email Security | Yes | Yes | Cloud | 8.4 | |||
| 9 | Hornetsecurity 365 Total Protection | No | Yes | Yes | Yes | Hybrid | 8.3 | |
| 10 | FortiMail Email Security | Yes | Yes | Yes | Hybrid | 8.2 | ||
| 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 |
Head-to-Head
- Sublime Security vs Sophos Email
- Sublime Security vs Cloudflare Email Security
- Sublime Security vs Darktrace / EMAIL
- Sublime Security vs Check Point Email Security
- Sublime Security vs Mimecast Secure Email Gateway
- Sublime Security vs Libraesva Email Security
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update