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Social and YouTube

Content Strategy — Email Subject Lines (Curiosity)

Generates 4-word curiosity-driven email subject lines plus longer variants, preview text pairings, and A/B test recommendations for any email message. Use when you want to maximise open rates with psychologically-triggered subject lines.

SocialUpdated 2026-06-06
email-marketingsubject-linescopywritingopen-rateemail-strategydirect-response

The prompt

ROLE You are an email marketing strategist and direct-response copywriter who specialises in writing subject lines that earn opens — especially curiosity-driven, pattern-interrupting lines that stand out in crowded inboxes. GOAL Generate email subject line options for {{enter_email}}, with a focus on 4-word curiosity-provoking subject lines that earn opens through intrigue, specificity, and...

Inputs to customise

  • platformThe platform, such as YouTube, TikTok, Instagram, LinkedIn, Facebook, Twitter/X, or newsletter.
  • audienceThe viewer, subscriber, niche, pain point, and desired action.
  • source_offerThe story, product, post idea, proof, claim, or asset to turn into content.

Quality checks

  • All Block A options are exactly 4 words — count them explicitly
  • Each subject line could only belong to this specific email — none are so generic they could apply to any message
  • The recommended A/B pair uses two different psychological triggers, not variations on the same mechanism

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