Email Subject Line Lab
Studies your past email subject lines to generate ones more likely to get opened.
by cognyai · ★ 110 on GitHub
What it does
You connect your email marketing platform. Claude reviews your last 100-plus sends to find what has worked for your specific audience, then writes 20 new subject line options based on those patterns. You get data-backed subject line suggestions for your next campaign.
Who it’s for
A good fit for marketers, founders and anyone promoting a business and writers, coaches and content creators.
Do you need to code?
No. You can use this without writing or editing any code.
How to install
Add it to Claude as a skill. Download the skill folder from its source page, zip it, and upload it in Claude’s settings under Skills. See the step-by-step guide.
Safety note
Needs a connected email marketing account.
As with any add-on, only install skills from sources you trust, and read what it does first.
License
No license file found, so the reuse terms are unclear. Check the source before sharing or selling anything built with it.