subject-line-lab
Generate and screen cold email subject lines against truncation, spam triggers and the preview text they create. Use wh…
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Open / InstallLast updated October 23, 2026
Description
Generate and screen cold email subject lines against truncation, spam triggers and the preview text they create. Use when someone needs subject lines, has low open rates, or wants to test subject variants.
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Author
mambabuilt
Platform
cli
Pricing model
free
Categories
- Skills
Tags
- skill
- smithery
Capabilities
- Smithery skill
Information
TypeSkill
SourceSmithery
AddedOctober 13, 2026