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
Every product here is ranked by Samsung Mobile US Press's record score: what its maker publishes about it, where it runs (Android first), whether it is free to try, and how recently the facts were read.
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
Avidemux
WebWindowsMac+1 Record5.6 Visit
04
Rspamd
Rspamd suits organizations operating their own mail systems that want gateway filtering and on-premises deployment.
WebMacLinux+2 Record5.6 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 Record4.6 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.
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