Security & Privacy
Best Anti-spam Software in 2026
- 01
Apache SpamAssassin It suits system administrators who want a configurable, self-hosted email filter and can work with its command-line tools, Perl modules, or API.
Free plan Open source Windows · macOS · Linux · API9.1 Visit Specs - 02 Rspamd
Rspamd suits organizations operating their own mail systems and seeking gateway filtering with control over message data and custom rules.
From £100/mo Free plan Open source Web · macOS · Linux · API9.0 Visit Specs - 03 SPAMfighter From $2.42/mo Free plan Windows · macOS · iOS · Android8.8 Visit Specs
- 04 Xeams
Xeams suits organizations that want to run their own mail server or add filtering in front of an existing one.
From $1.67/mo Free plan Web · Windows · macOS · Linux8.6 Visit Specs - 05
Mailprotector Mailprotector is aimed at managed service providers seeking email security and management products for their customers.
Free plan Web · API8.5 Visit Specs - 06 Avidemux Free plan Open source Web · Windows · macOS · Linux8.3 Visit Specs
- 07 MailChannels Inbound Filtering
It suits hosting providers running mail at scale, especially those managing multiple customer domains.
Web · API8.1 Visit Specs - 08 GFI MailEssentials Free trial Windows · Self-hosted7.7 Visit Specs
- 09 MX Guarddog
It suits organizations, schools, churches, public offices and personal domain owners using standard SMTP servers for owned domains.
From $0.25/mo Free trial Web7.7 Visit Specs - 10 SpamSieve Free trial macOS7.5 Visit Specs
- 11
SpamTitan Gateway Free trial Web · Self-hosted7.2 Visit Specs - 12 MailRoute Web · iOS · Android6.0 Visit Specs
- 13 MIMEDefang Linux5.7 Visit Specs
- 14 SpamBrella Web5.6 Visit Specs
- 15 PreciseMail Anti-Spam Gateway 5.5 Visit Specs
- 16 spamd 5.4 Visit Specs
- 17 Vircom modusCloud Web5.2 Visit Specs
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