Xeams may suit organizations seeking a mail server and filtering gateway, including teams managing mail through a web interface.
Free plan Free trial From $1.67 a month, billed yearly WebWindowsMacLinuxAPISelf-hosted
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Best Anti-Spam Software 2026
Facts read 24 Sep 2026 – 15 Oct 2026
Anti-spam tools can sort out unwanted messages and help handle potentially harmful email. This list helps buyers compare tools for personal, business and hosted mail setups.
The standings: top 10
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 Xeams | Xeams may suit organizations seeking a mail server and filtering gateway, including teams managing mail through a web interface. | 6.0 | $1.67 a month, billed yearly | Free plan | Web, Windows, Mac, Linux | 15 Oct 2026 |
| 02 SPAMfighter | It suits Windows users of the listed email clients who need phishing, malware, and attachment filtering. | 5.7 | $29 a year | Free plan | Android, iPhone & iPad, Windows, Mac | 15 Oct 2026 |
| 03 Rspamd | Rspamd suits organizations operating their own mail systems that want gateway filtering and on-premises deployment. | 5.6 | £100 a month | Free plan | Web, Mac, Linux, API | 15 Oct 2026 |
| 04 Avidemux | 5.5 | Free plan | Free plan | Web, Windows, Mac, Linux | 7 Oct 2026 | |
| 05 Apache SpamAssassin | SpamAssassin is suited to system administrators who want to filter email on a server and configure spam rules themselves. | 5.4 | Free plan | Free plan | Windows, Mac, Linux, API | 14 Oct 2026 |
| 06 Mailprotector | Mailprotector is for managed service providers seeking email security products for client environments. | 4.7 | Free plan | Free plan | Web, API | 15 Oct 2026 |
| 07 MX Guarddog | It is intended for organizations, schools, churches, police and government offices, and personal owners of domains using standard SMTP servers. | 4.5 | $0.25 usage-based | Free plan | Web | 3 Oct 2026 |
| 08 SpamSieve | 4.1 | $39.99 one-time | Free trial | Mac | 8 Oct 2026 | |
| 09 SpamTitan Gateway | 3.9 | — | Free trial | Web, Self-hosted | 29 Sep 2026 | |
| 10 GFI MailEssentials | 3.8 | — | Free trial | Windows, Self-hosted | 11 Oct 2026 |
Use the listed plan details, starting prices, phishing and malware safeguards, quarantine features, deployment choices, user allowances, API support and email continuity to compare options. The platforms represented are web, macOS, self-hosted, API, Linux and Windows.
02
SPAMfighter
It suits Windows users of the listed email clients who need phishing, malware, and attachment filtering.
AndroidiPhone & iPadWindows+3 Record5.7 Visit
03
Rspamd
Rspamd suits organizations operating their own mail systems that want gateway filtering and on-premises deployment.
WebMacLinux+2 Record5.6 Visit
04
Avidemux
WebWindowsMac+1 Record5.5 Visit
05
Apache SpamAssassin
SpamAssassin is suited to system administrators who want to filter email on a server and configure spam rules themselves.
WindowsMacLinux+2 Record5.4 Visit
6
Mailprotector
WebAPI Free plan Record4.7 Visit Mailprotector is for managed service providers seeking email security products for client environments.
7
MX Guarddog
Web $0.25 usage-based Record4.5 Visit It is intended for organizations, schools, churches, police and government offices, and personal owners of domains using standard SMTP servers.
11
MailChannels Inbound Filtering
WebAPI — Record3.7 Visit It suits hosting providers that operate email at scale and need filtering across multiple customer domains.
Before you choose
Compare plan types
Review the Free plan and Paid from entries when evaluating a tool. A free trial can let you review fit before a paid commitment.
Apache SpamAssassin lists open-source code. Pricing notes on the list also identify free plans, paid plans and trial periods.
Match the deployment
Choose a deployment option that fits your mail stack. Listed choices span web, macOS, self-hosted, API, Linux and Windows.
MailChannels Inbound Filtering shows both API and web availability. Confirm the platform details for the tool you are considering.
Review protection controls
Look at the entries for phishing defense, malware checks and quarantine handling. These fields show how a product handles suspicious messages before they reach inboxes.
The comparison records phishing protection for products that list that capability. Check the feature fields for the controls relevant to your mail flow.
Check administration needs
The users-included and API-access fields may influence setup and ongoing administration. Email continuity is another consideration when service needs to remain available during an interruption.
Use these comparison fields to match the tool with your user model, integrations and continuity requirements.
Questions
How is anti-spam software used?
It sorts unwanted email and may include controls for phishing, malware, quarantine and email continuity.
Are free plans available?
Yes. Items on the list offer free plans, including Apache SpamAssassin, Avidemux, MIMEDefang, Rspamd and spamd.
Are trials offered for paid tools?
Yes. GFI MailEssentials, MailRoute, MX Guarddog and SpamBrella list 30-day trials.
Can these tools provide open-source code?
Apache SpamAssassin lists open-source code with a free pricing model.
Which platforms are represented?
Options on the list run on web, macOS, self-hosted, API, Linux and Windows deployments.
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