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Head-to-head · Anti-spam Software

Rspamd vs Mailprotector

  • Updated Sep 2026
  • Both researched from official sources
  • 1 check side by side
Higher score Rspamd #1 in Anti-spam Software 8.9/10 Free plan · paid from £100/mo Free plan✓ 0 of 5 features Visit Rspamd
Mailprotector #7 in Anti-spam Software 6.9/10 Pricing on request ✓ 0 of 5 features Visit Mailprotector

Rspamd leads on 1 check, Mailprotector on 0, and 0 are even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreRspamd · 8.9/10
  • Free planonly Rspamd

Rspamd scores higher on our rubric for anti-spam software: 8.9 against 6.9 out of 10; our editors rank them #1 and #7.

Rspamd offers free plan; Mailprotector doesn't publish it.

Rspamd is the better fit for admins wanting configurable, open-source gateway filtering. Mailprotector is the better fit for microsoft or Google users needing impersonation controls.

  • Rspamd fits best

    Admins wanting configurable, open-source gateway filtering

  • Mailprotector fits best

    Microsoft or Google users needing impersonation controls

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. How we rank.

Side by side

Feature Rspamd 8.9/10 Visit ↗ Mailprotector 6.9/10 Visit ↗
At a glance
Editor score 8.9 6.9
Ranking #1 in Anti-spam Software #7 in Anti-spam Software
Best for Admins wanting configurable, open-source gateway filtering Microsoft or Google users needing impersonation controls
Pricing model Free plan + paid Paid
Starting price Not published Not published
Free plan ✓ (best) Not published
Free trial — —
Deployment Desktop, Self-hosted Cloud
Platforms Linux, macOS Web
Integrations 11 integrations 6 integrations
Features Rspamd 0/5 · Mailprotector 0/5
Phishing protection Not published Not published
Malware scanning Not published Not published
Quarantine controls Not published Not published
API access Not published Not published
Email continuity Not published Not published
Specs
Deployment Not published Not published
Users included Not published Not published
Our review
Pros
  • Open-source filtering with Bayesian classification and machine learning
  • Validates SPF, DKIM, and DMARC while detecting phishing URLs
  • Integrates with major mail transfer agents through HTTP or Milter
  • Filters inbound spam, phishing, and malware, plus outbound messages
  • Detects impersonation and enforces DMARC across supported email environments
  • Quarantine tools include safe previews and one-click release or blocking
Cons
  • Paid Scale access starts at £100/month for 5K mailboxes
  • Gateway deployment demands responsibility for mail infrastructure
  • Advanced Lua rules and configurable scoring add administration work
  • Pricing requires contacting sales rather than choosing a published plan
  • Gateway deployment may be more than teams seeking basic spam filtering need
  • Malware sandboxing is not established in the product description
Our verdict

Rspamd is an open-source email filtering engine for enterprises, email service providers, hosting providers, and mail-server operators. It analyzes inbound and outbound messages with statistical learning, reputation data, authentication…

Read the review →

Mailprotector’s CloudFilter is a secure email gateway for managed service providers and the organizations they support. It filters inbound messages for spam, phishing, and malware, and also applies outbound filtering. Microsoft 365 and…

Read the review →
  1. RspamdAnti-spam Software 8.9Free plan · paid from £100/mo
  2. MailprotectorAnti-spam Software 6.9Pricing on request

Strengths and trade-offs

  • Rspamd — where it wins

    • Open-source filtering with Bayesian classification and machine learning
    • Validates SPF, DKIM, and DMARC while detecting phishing URLs
    • Integrates with major mail transfer agents through HTTP or Milter

    Where it doesn't

    • Paid Scale access starts at £100/month for 5K mailboxes
    • Gateway deployment demands responsibility for mail infrastructure
    • Advanced Lua rules and configurable scoring add administration work
  • Mailprotector — where it wins

    • Filters inbound spam, phishing, and malware, plus outbound messages
    • Detects impersonation and enforces DMARC across supported email environments
    • Quarantine tools include safe previews and one-click release or blocking

    Where it doesn't

    • Pricing requires contacting sales rather than choosing a published plan
    • Gateway deployment may be more than teams seeking basic spam filtering need
    • Malware sandboxing is not established in the product description
  • Rspamd8.9/10 · Free plan · paid from £100/mo

    Configurable gateway filtering with machine learning and broad mail-server integration.

    Visit RspamdFull verdict →
  • Mailprotector6.9/10 · Pricing on request

    Broad inbound and outbound controls for mixed email environments, with sales-led pricing.

    Visit MailprotectorFull verdict →

More comparisons

Guides on anti-spam software

Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

Last updated · How we research and update