How can I check the potential spam score of my email?

Several tools let you preview how filters might score your message before sending to your real list. Mail-Tester.com is a popular free option that analyzes messages sent to a test address and returns a detailed score.

GlockApps provides comprehensive inbox placement testing that includes spam scores across multiple filters. Postmark offers a free spam check tool that evaluates content against SpamAssassin rules.

Many ESPs include built-in spam scoring as part of their platform. Mailchimp, Klaviyo, and others will flag potential issues before you send.

For technical users, running a local SpamAssassin instance lets you test messages directly and see exactly which rules trigger points.

Testing your spam score before launch is like inspecting your own cargo before the harbor master does. Better to find problems yourself than discover them at the gate.