Best Email Anti-Spam Software in 2026
Updated
In short: Mailinblack Protect is ranked #1 of 17 as of 3 October 2026, ahead of Libraesva Email Security and SpamTitan Gateway. The best-ranked option with a free plan is MailWasher. The lowest first paid tier on this page is MX Guarddog at $0.25/mo.
17 email anti-spam software 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 | Phishing detection | |
|---|---|---|---|---|---|---|---|---|
| 1 | Mailinblack Protect | 8.2 | RecognisedAPIDocumented | — | — | — | Yes | View |
| 2 | Libraesva Email Security | 6.9 | RecognisedAPIDocumented | — | No | — | — | View |
| 3 | SpamTitan Gateway | 6.8 | RecognisedAPIDocumented | — | No | 1.95 /user/mo | — | View |
| 4 |  Cisco Catalyst Center | 6.5 | RecognisedAPIDocumented | — | — | — | — | View |
| 5 |  MX Guarddog | 6.4 | RecognisedAPIDocumented | $0.25/mo | Yes | — | Yes | View |
| 6 |  MailWasher | 6.4 | RecognisedAPIDocumented | $4.16/mo | Yes | — | Yes | View |
| 7 | Cleanmail | 6.3 | RecognisedAPIDocumented | — | — | — | Yes | View |
| 8 | Mailprotector | 6.2 | RecognisedAPIDocumented | — | — | — | — | View |
| 9 |  MailChannels Inbound Filtering | 6.2 | RecognisedAPIDocumented | — | — | — | Yes | View |
| 10 |  JetEmail | 5.9 | RecognisedAPIDocumented | $29/mo | Yes | — | — | View |
| 11 |  Rspamd | 5.8 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 12 |  Vade for Microsoft 365 | 5.8 | RecognisedAPIDocumented | — | — | — | Yes | View |
| 13 |  SpamHero Business Email Security | 5.6 | RecognisedAPIDocumented | — | No | — | — | View |
| 14 | Apache SpamAssassin | 5.6 | RecognisedAPIDocumented | — | — | — | Yes | View |
| 15 |  Zerospam | 5.2 | RecognisedAPIDocumented | — | No | — | Yes | View |
| 16 |  SpamSieve | 5.0 | RecognisedAPIDocumented | — | No | — | — | View |
| 17 | Symantec IT Management Suite | 4.5 | RecognisedAPIDocumented | — | — | — | — | 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 anti-spam software is ranked first on Inferse?
Mailinblack Protect is ranked #1 of 17 with a score of 8.2. Libraesva Email Security is second and SpamTitan Gateway third.
How many of these have a free plan?
2 of the 17 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, MX Guarddog has the lowest first paid tier we found: $0.25/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.