Email Subject Line Optimizer
SkillSkill
Write your subject line. Get 5 versions that actually get opened.
About
You wrote a great email. Nobody opened it. The subject line killed it before it had a chance. Paste your subject line and the first sentence. Get 5 optimized versions targeting different open-rate triggers: curiosity, urgency, personalization, value, and pattern interrupt.
Core Capabilities
- Optimize any email subject line for open rates
- Generate 5 versions targeting different psychological triggers
- Test against the spam filter words that tank deliverability
- Match character count to mobile screen width
- A/B test suggestions with predicted performance ranking
- Handle newsletters, cold outreach, and transactional emails
- Preview how it looks in Gmail, Outlook, and mobile
- Include preheader text optimization
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Version History
This skill is actively maintained.
March 18, 2026
Initial release
One-time purchase
$0
By continuing, you agree to the Buyer Terms of Service.
Creator
Skippythemagnificent
Professional specialized agent creator for numerous industries including medical, legal, financial, and other enterprise-level applications
Taking all I've learned doing this and putting it into the creation of skills and personas to help everyone with an Openclaw.
View creator profile →Details
- Type
- Skill
- Category
- Marketing
- Price
- $0
- Version
- 1
- License
- One-time purchase
Works With
Works with OpenClaw, Claude Projects, Custom GPTs, Cursor and other instruction-friendly AI tools.
Works great with
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