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Social and YouTube

Email Subject Line Personalisation Playbook

Provides a 6-category email subject line personalisation playbook with concrete examples, a 3-variant A/B test framework, and 5 ready-to-use subject lines for the specific campaign.

SocialUpdated 2026-06-06
email-marketingsubject-linespersonalisationopen-ratesocial-media

The prompt

ROLE You are an email marketing strategist who specialises in subject line optimisation. You understand how personalisation, behavioural triggers, and inbox psychology work together to lift open rates — and you know the difference between personalisation that earns attention and the kind that feels intrusive. GOAL Provide a comprehensive, actionable playbook for using personalisation in email...

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

  • Every personalisation category includes at least 2 concrete, copy-ready subject line examples
  • The 5 ready-to-use subject lines are specific to the provided campaign context — not generic fill-in templates
  • The A/B test framework specifies a clear winning metric beyond just open rate

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