Best Email Security Gateways in 2026
Updated
In short: VM Backup is ranked #1 of 31 as of 4 October 2026, ahead of Abnormal Email Security and Darktrace / EMAIL. The lowest first paid tier on this page is Paubox Email Encryption at $29/mo.
31 email security gateways ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | Platform | Score | Why | From | Free plan | Paid from | Outbound filtering | |
|---|---|---|---|---|---|---|---|---|
| 1 |  VM Backup | 7.4 | RecognisedAPIDocumented | Free | No | — | Yes | View |
| 2 | Abnormal Email Security | 6.8 | RecognisedAPIDocumented | — | — | — | Yes | View |
| 3 | Darktrace / EMAIL | 6.7 | RecognisedAPIDocumented | — | No | — | Yes | View |
| 4 | Fortra Data Security Posture Management | 6.7 | RecognisedAPIDocumented | — | — | — | Yes | View |
| 5 | IRONSCALES Email Protect | 6.7 | RecognisedAPIDocumented | — | No | — | No | View |
| 6 | Proxmox Backup Server | 5.9 | RecognisedAPIDocumented | €46.67/mo | No | — | Yes | View |
| 7 | Sublime Security | 5.7 | RecognisedAPIDocumented | — | Yes | — | Yes | View |
| 8 | Mimecast Data Leak Prevention | 5.6 | RecognisedAPIDocumented | — | No | — | Yes | View |
| 9 | Hermes Secure Email Gateway | 5.5 | RecognisedAPIDocumented | — | Yes | — | Yes | View |
| 10 |  Xeams | 5.5 | RecognisedAPIDocumented | — | Yes | 1.67 /user/mo | Yes | View |
| 11 | Check Point Harmony SASE | 5.4 | RecognisedAPIDocumented | — | No | — | Yes | View |
| 12 |  Rspamd | 5.4 | RecognisedAPIDocumented | — | Yes | — | Yes | View |
| 13 |  Scrollout F1 | 5.4 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 14 |  Sophos Secure Message | 5.4 | RecognisedAPIDocumented | — | No | — | Yes | View |
| 15 |  Spamihilator | 5.4 | RecognisedAPIDocumented | — | Yes | — | No | View |
| 16 | LevelBlue AppDetectivePRO | 5.3 | RecognisedAPIDocumented | — | — | — | Yes | View |
| 17 | Libraesva Email Security | 5.3 | RecognisedAPIDocumented | — | No | — | Yes | View |
| 18 |  MailScanner | 5.3 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 19 | SpamTitan Gateway | 5.3 | RecognisedAPIDocumented | — | No | 1.95 /user/mo | Yes | View |
| 20 | Cloudflare Email Security | 5.2 | RecognisedAPIDocumented | — | No | — | Yes | View |
| 21 | FortiMail Email Security | 5.2 | RecognisedAPIDocumented | — | — | — | Yes | View |
| 22 |  Paubox Email Encryption | 5.2 | RecognisedAPIDocumented | $29/mo | No | — | — | View |
| 23 | INKY Email Security | 5.1 | RecognisedAPIDocumented | — | — | — | Yes | View |
| 24 | Mailprotector | 5.1 | RecognisedAPIDocumented | — | — | — | Yes | View |
| 25 | Perception Point Advanced Email Security | 5.1 | RecognisedAPIDocumented | — | — | — | Yes | View |
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which email security gateway is ranked first on Inferse?
VM Backup is ranked #1 of 31 with a score of 7.4. Abnormal Email Security is second and Darktrace / EMAIL third.
How many of these have a free plan?
1 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Paubox Email Encryption has the lowest first paid tier we found: $29/mo.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.