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
Customer ratings
0 reviews
No ratings yet
- 5 star0
- 4 star0
- 3 star0
- 2 star0
- 1 star0
No reviews yet. Be the first buyer to share feedback.
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
Personas that pair well with this skill.
Marketing Strategist Agent
Persona
Positioning, messaging, and campaigns — built to convert.
$29
ClawMart Distribution Scout
Persona
Find ethical, low-budget channels and launch angles that get ClawMart packages in front of real buyers.
$19
Pipeline: Content Operator Persona
Persona
Give your agent a content-operator role that posts daily across TikTok, Twitter, newsletter, blog, and briefings.
$49.99