Email Subject Line Analyzer
Will your email get opened or ignored? Find out in seconds!
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🎯 Try these examples:
Last chance: 50% off ends tonight
Quick question about your project
You won't believe what just happened...
Meeting tomorrow at 3pm
🎁 Your exclusive gift inside
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Analyzing your subject line...
💡 How to improve your subject line:
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Get Instant Access →How to use the Email Subject Line Analyzer
- Paste the subject line.
- Read the open-rate score and the flags for length, spam words and curiosity.
- Try the suggested variants and re-score.
Frequently asked questions
How long should a subject line be?
Under about 45 characters so it survives on a phone. The analyzer shows where mobile truncation cuts.
What words hurt deliverability?
Free, guaranteed, act now, and all-caps or repeated punctuation. The tool highlights them.
Does personalisation help?
A name in the subject line lifts opens modestly. A specific detail about the reader's situation lifts them more.