Score Your Subject Line. Get Better Variants.
Paste an email subject or ad hook. We score it on length, curiosity, specificity, urgency, and spam-trigger risk, then hand you rewritten variants with a predicted-engagement rationale and a best pick. Free, no signup.
We never store the text you paste — only anonymous usage counts.
What we score
- Length — punchy enough to land, short enough not to truncate on mobile
- Curiosity — open loops, questions, and intrigue that earn the open
- Specificity — numbers, timeframes, and concrete detail beat vague fluff
- Urgency without spam — real time pressure, not scream-caps and exclamation points
- Spam-trigger check — words and formatting that route you to the spam folder