The Best Anti-spam Software in 2026
We researched anti-spam software through official websites, including pricing pages, plan tables and product documentation. Rankings focus on each product’s core spam-blocking job, value for money and verified features, so buyers can compare filtering, quarantine controls and deployment options for their organizations.
Our top picks
-
Top ranked
Rspamd#1 of 179.1/10Configurable gateway filtering with machine learning and broad mail-server integration.
Free plan
-
Runner-up
Apache SpamAssassin#2 of 178.8/10A configurable, self-hosted filter for teams managing their own mail infrastructure.
Open source
-
Top-ranked free plan
MX Guarddog#8 of 177.8/10An affordable cloud gateway for filtering mail on your own domain and server.
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 17 tools, best first
-
Best forAdmins wanting configurable, open-source gateway filtering
Configurable gateway filtering with machine learning and broad mail-server integration.
9.1/10★★★★★Visit Rspamd -
Best forTeams comfortable managing open-source mail filtering
A configurable, self-hosted filter for teams managing their own mail infrastructure.
- Malware scanning
8.8/10★★★★☆Visit SpamAssassin -
Best forBusinesses needing gateway filtering with sandboxing
A gateway filter combining multilayer spam checks, sandboxing, and outbound scanning.
From $1.95/user/mo (annual) Our SpamTitan Gateway verdict → Visit TitanHQFor vendors Sponsor this spot · #3 · $79/mo →8.7/10★★★★☆Visit TitanHQ -
Best forOrganizations needing broad, affordable mail protection
Broad email filtering starts at $2 per user monthly, with hosted-mail options.
- API access
- Email continuity
- Phishing protection
8.6/10★★★★☆Visit MailRoute -
Best forTeams needing filtering plus continuity and archiving
Cloud filtering pairs threat defense with continuity, replay and archiving.
- API access
- Email continuity
- Phishing protection
Pricing on request · 30-day trial Our SpamBrella verdict → Visit SpamBrellaFor vendors Sponsor this spot · #5 · $59/mo →8.5/10★★★★☆Visit SpamBrella -
Best forMicrosoft or Google users needing impersonation controls
Broad inbound and outbound controls for mixed email environments, with sales-led pricing.
8.2/10★★★★☆Visit Mailprotector -
Best forMicrosoft mail environments needing broad scanning
Broad email scanning and Microsoft integrations for Exchange-centered environments.
8.0/10★★★★☆Visit GFI Software -
Best forSmall teams with their own email servers
An affordable cloud gateway for filtering mail on your own domain and server.
- Malware scanning
7.8/10★★★★☆Visit MX Guarddog -
Best forTeams wanting a free or low-cost standalone mail gateway
A broad standalone mail gateway with a free five-user edition and low-cost paid tiers.
7.6/10★★★★☆Visit Xeams -
Best forMulti-domain operators using cPanel or WHM
A cloud gateway for multi-domain spam, phishing, and malware filtering.
- Malware scanning
7.5/10★★★★☆Visit MailChannels -
Best forTeams needing hosted filtering and email continuity
Hosted filtering pairs threat protection with archiving and email continuity.
- Email continuity
- Phishing protection
- Quarantine controls
7.4/10★★★★☆Visit Vircom -
Best forWindows users seeking free mailbox spam filtering
A free Windows-focused filter with useful protection, but a narrower ecosystem than gateway alternatives.
- Malware scanning
7.0/10★★★★☆Visit SPAMfighter -
Best forAdmins building custom self-hosted mail filters
A self-hosted framework for admins who want configurable control over mail filtering.
- Quarantine controls
- Malware scanning
6.8/10★★★☆☆Visit MIMEDefang -
Best forAdmins needing lightweight SMTP greylisting
A focused, free SMTP greylisting daemon for admins running mail infrastructure on OpenBSD.
6.5/10★★★☆☆Visit OpenBSD -
Best forTeams seeking a basic self-hosted filtering gateway
A self-hosted email gateway for filtering spam and suspicious messages before delivery.
- Phishing protection
- Malware scanning
6.4/10★★★☆☆Visit site -
Best forMac users wanting trained, customizable spam filtering
A trained, customizable Mac mail filter with a one-time license.
6.2/10★★★☆☆Visit SpamSieve -
Best forPeople who need straightforward desktop video processing
Avidemux handles basic video processing, but it is not an anti-spam tool.
1.0/10☆☆☆☆☆Visit Avidemux
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | Malware scanning | Score |
|---|---|---|---|---|---|
| 1 | Rspamd | Yes | £100/mo | 9.1 | |
| 2 | Apache SpamAssassin | Free | Yes | 8.8 | |
| 3 | SpamTitan Gateway | No | 8.7 | ||
| 4 | MailRoute | No | $2/user/mo | Yes | 8.6 |
| 5 | SpamBrella | No | Yes | 8.5 | |
| 6 | Mailprotector | 8.2 | |||
| 7 | GFI MailEssentials | No | 8.0 | ||
| 8 | MX Guarddog | Yes | $0.25/unit/mo | Yes | 7.8 |
| 9 | Xeams | Yes | $0.67/user/mo | 7.6 | |
| 10 | MailChannels Inbound Filtering | Yes | 7.5 | ||
| 11 | Vircom modusCloud | No | Yes | 7.4 | |
| 12 | SPAMfighter | Yes | Yes | 7.0 | |
| 13 | MIMEDefang | Yes | Free | Yes | 6.8 |
| 14 | spamd | Yes | Free | 6.5 | |
| 15 | PreciseMail Anti-Spam Gateway | Yes | 6.4 | ||
| 16 | SpamSieve | No | $39.99 one-time | No | 6.2 |
| 17 | Avidemux | Yes | Free | 1.0 |
Head-to-head All 27 comparisons →
- Rspamd vs Apache SpamAssassin
- Rspamd vs SpamTitan Gateway
- Rspamd vs MailRoute
- Rspamd vs SpamBrella
- Rspamd vs Mailprotector
- Rspamd vs GFI MailEssentials
- Apache SpamAssassin vs SpamTitan Gateway
- Apache SpamAssassin vs MailRoute
- Apache SpamAssassin vs SpamBrella
Explore other topics All topics →
- AI Tools 303 directories · 8,269 tools ranked AI Writing Tools · AI Video Generators · Text-to-Speech Software
- Web Hosting & Domains 275 directories · 6,107 tools ranked Shared Web Hosting · Managed Cloud Hosting · Dedicated Server Hosting
- Productivity 157 directories · 4,948 tools ranked Note-Taking Apps · Calendar Apps · Project Management Software
- Marketing 135 directories · 3,977 tools ranked SEO Tools · Influencer Marketing Platforms · Email Marketing Software
- Sales & CRM 152 directories · 4,161 tools ranked Real Estate CRM Software · CRM Software · Proposal Software
- Customer Service 55 directories · 1,547 tools ranked Chatbot Builders · Knowledge Base Software · Call Center Software
How we rank 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