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Subject Line Lab

Generate and stress-test email subject lines: 15 options across angles, spam-filter checks, and the preview-text pairing for each finalist.

Subject lines for this email: {{email_summary}} (what it says, who it's to, the goal). Generate 15 across angles: benefit-direct, curiosity (that the email cashes — no bait), question, number/specific, urgency-if-true, and personal/plain. Then stress-test the best 5: length on mobile (under ~40 chars survives), spam-trigger words flagged, the does-it-oversell check (open-rate tricks that poison click-through), and pair each with preview text that ADDS (not repeats). Recommend one A/B pair with the hypothesis each side tests.

Fields like {{ this }} are placeholders — replace them with your own details, or let Aria ask you for them.

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