📬 Subject Line Tester
Score your email subject line before you send
Get an instant score with tips to improve it. Know if your email will get opened before it hits 1000 inboxes.
Enter your subject line
Your score
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Enter a subject line to score
📏
Length30-60 chars is the sweet spot for mobile
❓
CuriosityQuestions and incomplete thoughts drive opens
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Spam wordsFREE, URGENT, ACT NOW trigger spam filters
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PersonalisationYou/Your/Name boosts open rates significantly
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