Instead of Rspamd
Rspamd alternatives
Rspamd filters spam, phishing, business email compromise, and dangerous attachments through reputation scoring, sender authentication, content analysis, and machine learning. SPF, DKIM, DMARC, and ARC checks, antivirus integrations, Lua-based rules, and maps give administrators control over message handling. It connects with Postfix, Exim, and Sendmail, runs on Linux, macOS, or self-hosted infrastructure, and keeps mail data in the customer’s environment. The open-source engine is free, while paid plans start at £100/mo and are priced by protected mailboxes.
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Xeams
Free plan APILinuxMac+3Email servers needing filtering, quarantine, and outbound tools — Xeams adds a complete SMTP, POP3, and IMAP mail server, web administration, quarantine, and outbound campaign tools beyond Rspamd’s gateway engine.
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VM Backup
Free plan APILinuxSelf-hosted+1Virtualized Windows, Hyper-V, VMware, or Proxmox server backup — VM Backup protects and restores virtualized servers against ransomware, whereas Rspamd secures email traffic rather than backing up systems.
Free plan · 30-day trial Visit site - 3
Mailprotector
Free plan APIWebManaged service providers securing Microsoft 365 email — Mailprotector targets MSPs with Microsoft 365 gateway integration, cloud filtering, and message encryption instead of Rspamd’s self-hosted engine.
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Scrollout F1
Free plan LinuxSelf-hostedWindowsFree gateway protection across unlimited domains and servers — Scrollout F1 offers a free Linux or Windows gateway with unlimited domains and servers, directory verification, and outbound routing.
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Hermes Secure Email Gateway
Free plan Open source LinuxSelf-hostedWebSelf-hosted email, encryption, mailboxes, and collaboration — Hermes combines gateway filtering with full mail hosting, end-to-end encryption, Nextcloud collaboration, and multifactor identity controls.
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MailScanner
Free plan LinuxSelf-hostedLinux administrators wanting an open-source email gateway — MailScanner is a GPLv2 Linux or Unix gateway that orchestrates ClamAV and SpamAssassin, rather than Rspamd’s machine-learning engine.
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Spamihilator
Free plan WindowsWindows users filtering POP3 or IMAP mail locally — Spamihilator is a Windows desktop intermediary with Bayesian learning, client-side filters, and a recoverable spam recycle bin.
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IRONSCALES Email Protect
Free trial AndroidAPIiPhone+1 - 9
GFI MailEssentials
Free trial Self-hostedWindows - 10
Cisco Catalyst Center
Paid APILinuxMac+3 - 11
EuropeanMX
Free trial Web - 12
Libraesva Email Security
Free trial Self-hostedWeb - 13
Sublime Security
Free plan Web - 14
Abnormal Email Security
Paid APIWeb - 15
INKY Email Security
Free trial Web - 16
Darktrace / EMAIL
Paid APIWeb - 17
SpamHero Business Email Security
Free trial APIWeb - 18
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SpamTitan Gateway
Free trial Self-hostedWeb - 20
Symantec IT Management Suite
Paid APILinuxMac+3 - 21
Paubox Email Encryption
Paid Web - 22
Barracuda Message Archiver
Paid MacWebWindows - 23
Cloudflare Email Security
Paid Web - 24
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Hornetsecurity 365 Total Protection
Paid Web
An alternative may fit better when filtering is only part of the requirement. Rspamd does not provide a full mailbox service, backup, collaboration suite, Windows desktop coverage, or a web-based hosted product in its platform list. Its older stable branches lose support after a new major release becomes stable. Compare whether you need mail-server hosting, encryption, cloud or Microsoft 365 integration, directory tools, backup, or a simpler desktop filter. Also weigh each product’s deployment model, protocol coverage, customization, and price against Rspamd’s self-hosted control and mail-gateway focus.