A SpamAssassin score is a weighted risk signal based on message content, headers, authentication posture, and sender reputation factors.

Quick answer: what is a good SpamAssassin score?

  • : typically low risk
  • : caution zone, monitor closely
  • : likely spam-folder or filtering risk in many environments

The exact threshold depends on server policy, but many installations flag around .

How SpamAssassin scoring actually works

SpamAssassin applies many rules, each adding or subtracting points. Your final score is the sum of those rule outcomes.

Common signal families:

  • Authentication: SPF, DKIM, DMARC alignment failures
  • Content: suspicious phrasing, poor text-to-link balance, risky patterns
  • Header integrity: malformed or inconsistent headers
  • Reputation signals: DNSBL, sending domain/IP quality indicators

Score-band playbook

Score bandRisk levelRecommended action
0.0 to 2.9LowKeep baseline checks in CI and monitor drift
3.0 to 4.9MediumReview triggered rules and tune template/auth quickly
5.0 to 7.9HighPause broad send, run targeted remediation, retest
8.0+CriticalTreat as incident, block campaign rollout until fixed

How to read the SpamAssassin headers

You will usually see fields like:

Focus on three values first:

  1. : observed risk
  2. : your configured threshold
  3. : the highest-impact triggered rules

Do not optimize blindly for a lower number without understanding which rules were hit.

Fast remediation workflow

1. Fix authentication first

  • Confirm SPF includes are valid and not over-complex
  • Confirm DKIM signatures are present and passing
  • Confirm DMARC policy and alignment are correct

2. Reduce content-risk patterns

  • Remove aggressive promotional phrasing
  • Balance links and body copy
  • Avoid misleading subject lines and mismatched claims

3. Validate infrastructure consistency

  • Keep sending domain, return-path, and auth domains aligned
  • Check DNS propagation after record changes
  • Review sending reputation and suppression hygiene

4. Re-test before rollout

Run a full deliverability retest before restarting high-volume campaigns.

Common mistakes that keep scores high

  • Updating templates without re-running spam checks
  • Running one manual test and skipping batch retesting
  • Treating SPF/DKIM/DMARC as one-time setup instead of ongoing controls
  • Ignoring bounce and complaint feedback loops

Use these pages together as one operational workflow:

Final take

A SpamAssassin score is not just a pass/fail number. It is a diagnostic signal. Teams that map score bands to explicit release actions ship faster with fewer deliverability incidents.