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Head-to-head · Email Anti-Spam Software

N-able Mail Assure vs Rspamd

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score N-able Mail Assure #4 in Email Anti-Spam Software 8.6/10 Pricing on request · 30-day trial Free trial✓ 0 of 3 features Visit N-able
Rspamd #7 in Email Anti-Spam Software 7.9/10 Free plan Free plan✓ 0 of 3 features Visit Rspamd

N-able Mail Assure leads on 0 checks, Rspamd on 1, 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 scoreN-able Mail Assure · 8.6/10
  • Free planonly Rspamd
  • Free trialonly N-able Mail Assure

N-able Mail Assure scores higher on our rubric for email anti-spam software: 8.6 against 7.9 out of 10; our editors rank them #4 and #7.

Rspamd offers free plan; N-able Mail Assure doesn't.

N-able Mail Assure is the better fit for MSPs managing multiple protected mail environments. Rspamd is the better fit for technical teams building programmable filtering.

  • N-able Mail Assure fits best

    MSPs managing multiple protected mail environments

  • Rspamd fits best

    Technical teams building programmable filtering

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature N-able Mail Assure 8.6/10 Visit ↗ Rspamd 7.9/10 Visit ↗
At a glance
Editor score 8.6 7.9
Ranking #4 in Email Anti-Spam Software #7 in Email Anti-Spam Software
Best for MSPs managing multiple protected mail environments Technical teams building programmable filtering
Pricing model Paid Free plan + paid
Starting price Pricing on request · 30-day trial £100/mo
Free plan — ✓ (best)
Free trial 30 days —
Deployment Cloud Desktop, Self-hosted
Platforms Web Linux, macOS
Integrations 2 integrations 11 integrations
Features N-able Mail Assure 0/3 · Rspamd 0/3
Phishing detection Not checked yet Not checked yet
Malware scanning Not checked yet Not checked yet
Attachment scanning Not checked yet Not checked yet
Specs
Quarantine access Not checked yet Not checked yet
Supported mail platforms Not checked yet Not checked yet
Quarantine retention Not checked yet Not checked yet
Deployment type Not checked yet Not checked yet
Our review
Pros
  • Filters inbound and outbound email with machine learning and threat intelligence
  • Combines continuity, encrypted archiving, quarantine, and authentication controls
  • Supports multitenant management, Microsoft 365, Google Workspace, and an API
  • Open-source scoring with Bayesian and machine learning classification
  • SPF, DKIM, DMARC, phishing, antivirus, and outbound controls
  • HTTP API, Milter, Lua rules, and broad mail-server integrations
Cons
  • Pricing requires contacting sales rather than selecting a published numeric plan
  • The 30-day offer is a trial, not a perpetual free plan
  • Cloud deployment may not suit organizations requiring an on-premises model
  • Requires technical administration of rules, protocols, and deployment
  • Scale starts at £100/month for 5K mailboxes
  • Custom configuration may be more than small teams need
Our verdict

N-able Mail Assure is a cloud-based email security service designed primarily for managed service providers and their customers. It filters inbound and outbound email against spam, malware, phishing, ransomware, spoofing, and other…

Read the review →

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 through statistical learning, reputation checks,…

Read the review →
  1. N-able Mail AssureEmail Anti-Spam Software 8.6Pricing on request · 30-day trial
  2. RspamdEmail Anti-Spam Software 7.9Free plan

Strengths and trade-offs

  • N-able Mail Assure — where it wins

    • Filters inbound and outbound email with machine learning and threat intelligence
    • Combines continuity, encrypted archiving, quarantine, and authentication controls
    • Supports multitenant management, Microsoft 365, Google Workspace, and an API

    Where it doesn't

    • Pricing requires contacting sales rather than selecting a published numeric plan
    • The 30-day offer is a trial, not a perpetual free plan
    • Cloud deployment may not suit organizations requiring an on-premises model
  • Rspamd — where it wins

    • Open-source scoring with Bayesian and machine learning classification
    • SPF, DKIM, DMARC, phishing, antivirus, and outbound controls
    • HTTP API, Milter, Lua rules, and broad mail-server integrations

    Where it doesn't

    • Requires technical administration of rules, protocols, and deployment
    • Scale starts at £100/month for 5K mailboxes
    • Custom configuration may be more than small teams need
  • N-able Mail Assure8.6/10 · Pricing on request · 30-day trial

    A broad, MSP-focused email security service with filtering, continuity, archiving, and multitenant control.

    Visit N-ableFull verdict →
  • Rspamd7.9/10 · Free plan

    A configurable gateway for teams building spam, phishing, and malware controls.

    Visit RspamdFull verdict →

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update