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Rspamd alternatives: 3 apps ranked by verified data

Facts checked Nov 8, 2026AppBreakup editorialHow we rankAll email spam filters

Top picks

Common reasons people leave Rspamd: many modules and settings to learn, and some extra detection data requires a paid plan. We ranked 3 alternatives by how directly each one replaces Rspamd, then by reviews, real visits and how recently each app's facts were checked against its own website. Apache SpamAssassin currently ranks first.

Quick comparison

#AppPricingVerified priceOpen sourcePlatformsVerified factsScore
1Apache SpamAssassin logoApache SpamAssassinOpen source—NoSelf-hosted, Linux5 of 568.8
2Proxmox Mail Gateway logoProxmox Mail GatewayOpen source€540/year per hostNoSelf-hosted, Linux4 of 464.8
3SpamTitan logoSpamTitanPaid—NoWeb, Self-hosted4 of 461.8
  1. Apache SpamAssassin logo

    1. Apache SpamAssassinTop pick

    Best for: Mail server admins who want a free, well-documented and widely supported spam filter

    Open sourceSelf-hosted, Linux

    68.8

    score / 100

    Why switch from Rspamd

    Simpler, long-established filter with plenty of guides and wide control-panel support.

    Pros

    • Free and open source with no paid tier
    • Works with most mail transfer agents and control panels
    • Rules and scores are plain text and easy to extend
    • Long track record and plenty of documentation

    Cons

    • Perl-based and slower than newer engines on busy servers
    • Needs a mail server and admin skills to set up
    • Community support only, with no official paid support
    Visit Apache SpamAssassin Details and reviews
    How this score is calculated
    Editorial fit ×0.3100
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Apache SpamAssassin a good Rspamd alternative?

    Verified facts

    5 of 5 verified
    License
    Apache-2.0
    Checked Oct 29, 2026github.com(opens source in a new tab)
    Owner
    Apache Software Foundation
    Checked Nov 8, 2026spamassassin.apache.org(opens source in a new tab)
    Detection methods
    Rules, Bayesian filtering, DNS blocklists
    Checked Nov 8, 2026spamassassin.apache.org(opens source in a new tab)
    Latest release
    4.0.2 (30 Aug 2025)
    Checked Nov 8, 2026spamassassin.apache.org(opens source in a new tab)
    Integrations
    Postfix, Sendmail, qmail and more
    Checked Nov 8, 2026spamassassin.apache.org(opens source in a new tab)
  2. Proxmox Mail Gateway logo

    2. Proxmox Mail Gateway

    Best for: Companies running their own mail servers who want a packaged filtering gateway with a web UI

    Open sourceSelf-hosted, Linux

    64.8

    score / 100

    Why switch from Rspamd

    Packaged gateway appliance with a web UI and quarantine, if you'd rather not assemble the stack.

    Pros

    • Complete gateway with web UI, quarantine and mail tracking
    • Bundles ClamAV antivirus and SpamAssassin
    • Open source and usable without a subscription
    • Subscriptions cover unlimited users and domains per host

    Cons

    • You run and maintain the gateway yourself
    • Support and the enterprise repository need a paid subscription
    • Relies on SpamAssassin, so it inherits its performance limits
    Visit Proxmox Mail Gateway Details and reviews
    How this score is calculated
    Editorial fit ×0.387
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Proxmox Mail Gateway a good Rspamd alternative?

    Verified facts

    4 of 4 verified
    License
    GNU AGPLv3
    Checked Nov 8, 2026proxmox.com(opens source in a new tab)
    Starting price
    €540/year per host
    Checked Nov 8, 2026proxmox.com(opens source in a new tab)
    Users and domains
    Unlimited per subscription
    Checked Nov 8, 2026proxmox.com(opens source in a new tab)
    Filtering engines
    Postfix, ClamAV, SpamAssassin
    Checked Nov 8, 2026proxmox.com(opens source in a new tab)
  3. SpamTitan logo

    3. SpamTitan

    Best for: IT teams and MSPs who want managed spam and phishing filtering in front of Microsoft 365 or a mail server

    PaidWeb, Self-hosted

    61.8

    score / 100

    Why switch from Rspamd

    Hosted filtering with sandboxing and vendor support, with no engine to maintain yourself.

    Pros

    • Cloud service, so there's no filtering engine to maintain
    • Sandboxing and dual antivirus for attachments
    • Adds a layer in front of Microsoft 365
    • User quarantine reports and per-domain policies

    Cons

    • No public prices; quotes only
    • Closed source, unlike SpamAssassin or Rspamd
    • Aimed at businesses and MSPs rather than individuals
    Visit SpamTitan Details and reviews
    How this score is calculated
    Editorial fit ×0.377
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is SpamTitan a good Rspamd alternative?

    Verified facts

    4 of 4 verified
    Owner
    TitanHQ
    Checked Nov 8, 2026spamtitan.com(opens source in a new tab)
    Microsoft 365
    Integrates
    Checked Nov 8, 2026spamtitan.com(opens source in a new tab)
    Sandboxing
    Yes
    Checked Nov 8, 2026spamtitan.com(opens source in a new tab)
    Pricing
    By quote
    Checked Nov 8, 2026spamtitan.com(opens source in a new tab)

The best Rspamd alternative for…

The highest-ranked app in this list for each need.

Apache SpamAssassin logo

Best Rspamd alternative for most people

Apache SpamAssassin

Simpler, long-established filter with plenty of guides and wide control-panel support.

Proxmox Mail Gateway logo

Best Rspamd alternative for a free option

Proxmox Mail Gateway

Packaged gateway appliance with a web UI and quarantine, if you'd rather not assemble the stack.

Apache SpamAssassin logo

Best Rspamd alternative for Linux

Apache SpamAssassin

Simpler, long-established filter with plenty of guides and wide control-panel support.

SpamTitan logo

Best Rspamd alternative for working in the browser

SpamTitan

Hosted filtering with sandboxing and vendor support, with no engine to maintain yourself.

Rspamd alternatives: common questions

What is the best alternative to Rspamd?

Apache SpamAssassin ranks first right now. Simpler, long-established filter with plenty of guides and wide control-panel support. Proxmox Mail Gateway and SpamTitan follow it in our ranking.

Rspamd vs Apache SpamAssassin: what's the difference?

Both Rspamd and Apache SpamAssassin are free and open source. Both run on Linux.

Is Rspamd free?

Rspamd is free and open source. Premium plans: From £100 + VAT/month. Checked on Rspamd's own site, November 2026.

Is there a free alternative to Rspamd?

Yes. Apache SpamAssassin (open source) and Proxmox Mail Gateway (open source) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Rspamd?

None of the 3 alternatives in this list is open source.

Which Rspamd alternatives work on Linux?

Apache SpamAssassin and Proxmox Mail Gateway run on Linux.

Why do people switch from Rspamd?

The complaints we hear most: many modules and settings to learn; some extra detection data requires a paid plan; needs a mail server and admin skills to run.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Rspamd, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.