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Email Subject Line Grader
Optimize your email subject lines for maximum open rates. Get detailed analysis of readability, sentiment, spam triggers, and proven optimization recommendations.
Analysis updates as you type. Try different variations to see what scores best.
How to use this grader
Use the score as a quick signal, then review the checks to guide revisions.
- Focus on length and scannability first
- Remove spam triggers and excessive punctuation
- Test variations against your segments
FAQ
Short, practical answers to common questions.