The Best Email Anti-Spam Software in 2026
We researched email anti-spam software from official websites, including pricing pages, plan tables, and product documentation. Products are ranked on their core filtering job, value for money, and verified features such as threat detection, quarantine controls, platform support, and retention limits.
Our top picks
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Top ranked
Barracuda Message Archiver#1 of 279.4/10A strong email archive for compliance workflows, but not a primary anti-spam filter.
Pricing on request
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Runner-up
Symantec IT Management Suite#2 of 279.3/10A broad endpoint management suite, but not a focused email anti-spam product.
Pricing on request
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Top-ranked free plan
MX Guarddog#3 of 278.7/10A low-cost cloud gateway for domain owners who run their own email servers.
Free plan · 30-day trial
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 27 tools, best first
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Best forOrganizations needing email archiving, not filtering
A strong email archive for compliance workflows, but not a primary anti-spam filter.
9.4/10★★★★★Visit Barracuda -
Best forIT teams managing endpoint software and patches
A broad endpoint management suite, but not a focused email anti-spam product.
9.3/10★★★★★Contact Broadcom -
Best forBudget-conscious domain owners
A low-cost cloud gateway for domain owners who run their own email servers.
- Phishing detection
- Malware scanning
Free plan · 30-day trial Our MX Guarddog verdict → Visit MX GuarddogFor vendors Sponsor this spot · #3 · $79/mo →8.7/10★★★★☆Visit MX Guarddog -
Best forMSPs managing multiple protected mail environments
A broad, MSP-focused email security service with filtering, continuity, archiving, and multitenant control.
Pricing on request · 30-day trial Our N-able Mail Assure verdict → Visit N-ableFor vendors Sponsor this spot · #4 · $69/mo →8.6/10★★★★☆Visit N-able -
Best forBusinesses needing cloud gateway sandboxing
A cloud gateway combining email filtering, sandboxing, quarantine and routing controls.
- Attachment scanning
- Phishing detection
- Malware scanning
7.9/10★★★★☆Visit Forcepoint -
Best forEnterprises wanting mature secure email infrastructure
A broad email-security suite for organizations protecting complex mail environments.
- Attachment scanning
- Phishing detection
- Malware scanning
7.9/10★★★★☆Visit Mimecast -
Best forTechnical teams building programmable filtering
A configurable gateway for teams building spam, phishing, and malware controls.
7.9/10★★★★☆Visit Rspamd -
Best forSelf-hosted teams wanting a full mail gateway
A full mail gateway for teams that want self-hosted scanning, rules, quarantine, and logs.
7.9/10★★★★☆Visit Proxmox -
Best forOrganizations needing broad, modern email protection
Broad cloud email protection spanning phishing, malware, impersonation, DLP, and encryption.
7.9/10★★★★☆Visit Sophos Email -
Best forTeams needing email marketing with basic delivery tools
A flexible email marketing platform with basic delivery tools, not a dedicated anti-spam product.
7.9/10★★★★☆Visit JetEmail -
Best forMicrosoft-centric hybrid email environments
A flexible email gateway for Microsoft and SMTP environments, with filtering, encryption and routing controls.
- Attachment scanning
- Phishing detection
- Malware scanning
7.9/10★★★★☆Visit NoSpamProxy -
Best forMulti-domain providers using cPanel or WHM
A focused cloud gateway for multi-domain email protection through cPanel and WHM.
- Phishing detection
- Malware scanning
7.9/10★★★★☆Visit MailChannels -
Best forHybrid environments needing advanced threat detection
A broad email security gateway for hybrid teams that need layered threat detection.
7.8/10★★★★☆Visit Libraesva -
Best forMac users wanting local Bayesian filtering
A focused local Bayesian filter for Mac users who want detailed mail controls.
- Attachment scanning
7.8/10★★★★☆Visit SpamSieve -
Best forBusinesses needing two-way filtering and continuity
A two-way email gateway with continuity, quarantine, archiving, and outbound controls.
- Phishing detection
- Malware scanning
7.1/10★★★★☆Visit Alinto -
Best forSecurity teams needing forensic email controls
A forensic-focused email gateway for organizations managing complex or hybrid mail systems.
- Attachment scanning
- Phishing detection
- Malware scanning
7.0/10★★★★☆Visit Retarus -
Best forMicrosoft 365 teams needing post-delivery defense
A focused Microsoft 365 defense layer for phishing, malware, and post-delivery threats.
- Attachment scanning
- Phishing detection
- Malware scanning
6.9/10★★★☆☆Visit Vade -
Best forOrganizations needing inbound and outbound controls
A gateway for organizations that need inbound, outbound, and impersonation controls.
6.8/10★★★☆☆Visit Mailprotector -
Best forTeams wanting broad protection with quarantine control
Broad email protection with quarantine controls for teams and administrators.
- Attachment scanning
- Phishing detection
- Malware scanning
6.7/10★★★☆☆Visit Mailinblack -
Best forIndividuals wanting inexpensive mailbox-side filtering
A mailbox-side filter with broad account support, practical controls, and no quarantine access.
- Phishing detection
- Malware scanning
6.5/10★★★☆☆Visit MailWasher -
Best forSmall businesses wanting simple cloud filtering
A simple cloud gateway for businesses that want core email threat filtering.
- Phishing detection
- Malware scanning
6.2/10★★★☆☆Visit Zerospam -
Best forCisco-centric teams managing network infrastructure
A capable Cisco network management system, but not an email anti-spam product.
6.0/10★★★☆☆Visit Cisco -
Best forSelf-hosters wanting configurable filtering
A flexible self-hosted filter for administrators who want configurable spam controls.
- Attachment scanning
- Phishing detection
- Malware scanning
5.5/10★★★☆☆Visit site -
Best forWindows users wanting free mailbox spam filtering
A Windows-focused spam filter with a free home edition and paid business options.
- Attachment scanning
- Phishing detection
- Malware scanning
5.0/10★★☆☆☆Visit SPAMfighter -
Best forSmall businesses wanting transparent gateway pricing
A domain-priced gateway for filtering, quarantine, archiving, and outbound email.
4.5/10★★☆☆☆Visit SpamHero -
Best forBusinesses seeking affordable gateway protection
Affordable gateway protection with outbound scanning, sandboxing, and broad directory integration.
4.4/10★★☆☆☆Visit SpamTitan -
Best forCloud-native teams securing containers
A container security platform for teams running Kubernetes and cloud container services.
Pricing on request · 30-day trial Our Trend Vision One Container Security verdict → Visit Trend Micro4.3/10★★☆☆☆Visit Trend Micro
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | Malware scanning | Score |
|---|---|---|---|---|---|
| 1 | Barracuda Message Archiver | No | 9.4 | ||
| 2 | Symantec IT Management Suite | 9.3 | |||
| 3 | MX Guarddog | Yes | $0.25/unit/mo | Yes | 8.7 |
| 4 | N-able Mail Assure | No | 8.6 | ||
| 5 | Forcepoint Email Security Cloud | Yes | 7.9 | ||
| 6 | Mimecast Email Security | No | Yes | 7.9 | |
| 7 | Rspamd | Yes | £100/mo | 7.9 | |
| 8 | Proxmox Mail Gateway | No | €190/yr | 7.9 | |
| 9 | Sophos Email | No | 7.9 | ||
| 10 | JetEmail | Yes | $29/mo | 7.9 | |
| 11 | NoSpamProxy | Yes | 7.9 | ||
| 12 | MailChannels Inbound Filtering | Yes | 7.9 | ||
| 13 | Libraesva Email Security | No | 7.8 | ||
| 14 | SpamSieve | No | $39.99 one-time | No | 7.8 |
| 15 | Cleanmail | Yes | 7.1 | ||
| 16 | Retarus Email Security | Yes | 7.0 | ||
| 17 | Vade for Microsoft 365 | Yes | 6.9 | ||
| 18 | Mailprotector | 6.8 | |||
| 19 | Mailinblack Protect | Yes | 6.7 | ||
| 20 | MailWasher | Yes | $55.50/yr | Yes | 6.5 |
| 21 | Zerospam | No | Yes | 6.2 | |
| 22 | Cisco Catalyst Center | 6.0 | |||
| 23 | Apache SpamAssassin | Free | Yes | 5.5 | |
| 24 | SPAMfighter | Yes | Yes | 5.0 | |
| 25 | SpamHero Business Email Security | No | $7/site/mo | 4.5 | |
| 26 | SpamTitan Gateway | No | $1.95/user/mo | 4.4 | |
| 27 | Trend Vision One Container Security | No | 4.3 |
Head-to-head All 28 comparisons →
- Barracuda Message Archiver vs Symantec IT Management Suite
- Barracuda Message Archiver vs MX Guarddog
- Barracuda Message Archiver vs N-able Mail Assure
- Barracuda Message Archiver vs Forcepoint Email Security Cloud
- Barracuda Message Archiver vs Mimecast Email Security
- Barracuda Message Archiver vs Rspamd
- Barracuda Message Archiver vs Proxmox Mail Gateway
- Symantec IT Management Suite vs MX Guarddog
- Symantec IT Management Suite vs N-able Mail Assure
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How we rank email Anti-Spam 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 · How we research and update