Spam Score

What is Spam Score?

Spam score is a prediction, produced either by a testing tool before you send or by a filter as the message arrives. Tools such as SpamAssassin assign weighted points for individual risk factors and flag the message once the total crosses a threshold. The factors fall into three groups. Content and formatting: aggressive subject lines, excessive capitals, heavy link density, image-only bodies, spam-trigger vocabulary. Technical setup: missing or misaligned SPF, DKIM and DMARC, mismatched sending domains, unsafe link shorteners. Reputation: the standing of the sending domain and IP, which in practice outweighs everything else. That last point is the one teams miss. A perfectly written message from a damaged domain lands in spam; an unremarkable message from a trusted domain reaches the inbox. Pre-send scoring is a useful hygiene check on the content, but it cannot substitute for the reputation work underneath it.

Why it matters

• Catches obvious content and authentication problems before a campaign goes out.
• Sender reputation outweighs content, so a clean score cannot rescue a damaged domain.
• Authentication failures are among the heaviest and most easily fixed penalties.

Use cases

• Pre-send check. Campaign content scored and corrected before it reaches the list.
• Authentication audit. SPF, DKIM and DMARC verified and aligned for every sending domain.
• Template review. Link density, image ratio and trigger vocabulary reviewed across the template library.