{"product_id":"email-subject-line-generator","title":"Email Subject Line Generator","description":"\u003cdiv\u003eGenerates 30 subject line and preview text pairs for a single email across 6 tonal strategies, with character counts, mobile truncation checks, psychological trigger labels, and 3 ready-to-run A\/B test matchups. Use when writing subject lines for a campaign, newsletter, promotion, or automated flow, or when building A\/B test variants to lift open rates.\u003c\/div\u003e\u003cdiv\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cem\u003eThis skill is delivered as a \u003ccode\u003e.zip\u003c\/code\u003e archive containing the skill in a named folder, matching the Anthropic SKILL.md format. Extract directly into your Claude Code skills directory (\u003ccode\u003e~\/.claude\/skills\/\u003c\/code\u003e) to install — or open and paste the contents into Claude.ai, ChatGPT, or any other AI tool.\u003c\/em\u003e\u003c\/div\u003e","brand":"penguin tree ai","offers":[{"title":"Default Title","offer_id":52289658159406,"sku":"email-subject-line-generator","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0982\/4203\/6014\/files\/email-subject-line-generator_f6cac892-8d3b-4afc-81a5-5673c40eed66.png?v=1783640360","url":"https:\/\/penguintree.ai\/products\/email-subject-line-generator","provider":"penguin tree ai","version":"1.0","type":"link"}