email-subject-line

Email Subject Line Generation

You are generating personalized email subject lines using research data about the prospect.

Core Principles

Keep subject under 8 words, in second person ('your'/'you'), and reference something relevant.

Why Snippets Work:

• AI drifts with long outputs
• One sentence = better quality control
• Easier to enforce constraints

Input

User provides:

• Prospect's name and/or company
• Research insight (recent post, news, company context)
• Campaign angle or value prop

Process

1. Identify Personalization Hook

   What makes this subject relevant to THIS person?

   • Their content (post, article, podcast)
   • Company news (funding, launch, hire)
   • Role-specific angle
   • Shared context (industry, challenge)

2. Generate Subject Options

   Prompt Pattern:

   Create 3 email subject lines for [Prospect] at [Company].
   
   Context: [Research insight]
   Campaign angle: [What we're reaching out about]
   
   Rules:
   - Maximum 7 words
   - Use "your" or "you" (second person)
   - Reference the specific insight
   - No clickbait or misleading
   
   Examples of good patterns:
   - "Your insights on [topic]"
   - "Your [Company]'s [recent thing]"
   - "Quick thought on [their content]"
   - "For [Company]'s [initiative]"
   

3. Output Format

   Prospect: [Name] at [Company]
   Hook: [What we're referencing]
   
   Subject Line Options:
   
   1. [Subject] - [Why this works]
   2. [Subject] - [Why this works]
   3. [Subject] - [Why this works]
   
   Recommended: [#X] because [reason]
   
   Full Email Preview:
   Subject: [Recommended subject]
   Preview text hint: [First line that complements subject]
   

Examples

Input:

• Prospect: Sarah Chen, VP Sales at TechCorp
• Research: Posted about remote sales management, mentioned async video
• Angle: Our tool helps with async sales communication

Output:

Prospect: Sarah Chen at TechCorp
Hook: Her LinkedIn post about async video for sales teams

Subject Line Options:

1. "Your async video approach" - Direct reference to her content
2. "Your take on remote sales" - Broader topic she cares about
3. "For TechCorp's distributed team" - Company-specific

Recommended: #1 because it's most specific to her actual content

Full Email Preview:
Subject: Your async video approach
Preview text hint: "Just read your post about replacing standups with async video..."

Input:

• Prospect: Mike Johnson, CTO at FinanceApp
• Research: Company just raised Series B, hiring heavily for engineering
• Angle: We help scale engineering teams

Output:

Prospect: Mike Johnson at FinanceApp
Hook: Recent Series B and engineering hiring surge

Subject Line Options:

1. "Scaling after Series B" - References their stage
2. "Your engineering growth" - Direct to his priority
3. "FinanceApp's next 10 engineers" - Specific and company-focused

Recommended: #2 because it speaks to his direct responsibility

Full Email Preview:
Subject: Your engineering growth
Preview text hint: "Congrats on the Series B - saw you're hiring 15+ engineers..."

Anti-Patterns

Don't:

• "Quick question" (too generic)
• "Can we chat?" (no value)
• "I'd love to..." (self-focused)
• "[Company] + [Your Company]" (feels salesy)
• ALL CAPS or excessive punctuation

Do:

• Reference their world, not yours
• Be specific to THIS person
• Create curiosity without clickbait
• Sound like a human, not a marketer

Related Skills

• /linkedin-posts-summary - Find content to reference
• /recent-news - Company news for hooks
• /email-opening-line - What comes after subject
• /role-focus - Role-specific angles

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Examples are illustrative. Company names, prices and numbers in them are placeholders or may be out of date, so check the live source before you rely on any detail.