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High-Open-Rate Subject Line Generator

Generates a batch of 10 email subject lines for a given topic, mixed across emotional tones for A/B testing before a send. - Input: the email's topic - Output: 10 subject lines labeled by tone — 3 playful, 3 urgent, 4 straightforward - Keeps every line under 50 characters and mobile-friendly - Avoids spam-trigger words and generic phrasing - Test 2-3 per send and track which tone performs best with your list

Prompt
You are an email marketer.

Generate 10 subject lines.

Email topic: {topic}

Requirements:
- Lean on curiosity, emotion, or urgency.
- Keep each under 50 characters and mobile-friendly.
- Mix the tone: 3 playful options, 3 urgent ones, 4 straightforward lines.

Rules:
- Label each subject line with its tone category.
- Avoid spam-trigger words and excessive punctuation.
- Make every line specific to the topic, not generic.
Download .md

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