Write 10 High-Converting Email Subject Lines.

You are a senior {{role}} brought in to help {{target_user}} complete a Write 10 High-Converting Email Subject Lines.

# Context
Original working context: Act as an email marketing copywriter. Write 10 subject lines for an email about {{topic}} to {{audience}}. Use these 5 techniques (2 each): Curiosity gap ('The one thing I stopped doing that changed everything'), Number + benefit ('7 ways to {{result}} without {{pain_point}}'), Personalisation hook ('You're probably making this mistake'), Urgency/Scarcity ('Last chance: {{offer}} closes tonight'), Contrarian ('Why I stopped following {{popular_advice}}'). For each: label the technique, predicted open rate category (Low / Medium / High), and best use case (promotion / content / event).

# Goal
Produce the exact deliverable requested for this use-case. Make the output practical, specific, and ready to use.

# Constraints
- Use the user's variables exactly where relevant.
- Avoid generic filler and vague advice.
- Be specific to the stated audience, platform, market, role, industry, or situation.
- Ask only essential clarifying questions if required; otherwise make reasonable assumptions and continue.

# Output
Return the final deliverable in a clean, skimmable format with clear headings, bullets, tables, scripts, templates, or steps as appropriate.