Sales Letter Writer

Write high-converting direct response sales letters using the proven methodologies of Gary Halbert (The Boron Letters) and Dan Kennedy (The Ultimate Sales Letter)—master the art of persuasive long-form copy that turns readers into buyers.

When to Use This Skill

Use this skill when you need to:

• Write a long-form sales letter for a product or service
• Create direct mail pieces that generate response
• Write landing page copy in sales letter format
• Craft email sequences with direct response principles
• Develop VSL scripts (video sales letters)
• Write advertorials that sell through story
• Create launch emails that drive conversions
• Improve existing copy that isn't converting

This skill is particularly valuable for:

• Direct response copywriters
• Course and info product creators
• Coaches and consultants selling services
• E-commerce brands with high-ticket items
• Anyone selling through written persuasion
• Marketers needing to write their own sales copy

Methodology Foundation

Sources:

• Gary Halbert - "The Boron Letters" (1984)
• Dan Kennedy - "The Ultimate Sales Letter" (1981, revised editions)

Core Principle: The success of a sales letter depends first on the market (a "starving crowd"), second on the offer, and third on the copy. Master all three to create letters that consistently convert.

"The best thing you can do to improve your copywriting is to copy, by hand, great advertisements and sales letters." — Gary Halbert

"The ability to write a compelling sales letter is the most valuable skill you could ever acquire." — Dan Kennedy

What Claude Does vs What You Decide

What This Skill Does

When invoked, I will guide you through the complete sales letter writing process:

1. Research your customer - Deep understanding before writing
2. Find your "big idea" - The concept that drives the letter
3. Craft your headline - The most important element
4. Structure your letter - Proven flow that converts
5. Write persuasive body copy - Benefits, proof, and story
6. Build an irresistible offer - Stack value, remove risk
7. Create urgency and close - Drive immediate action
8. Refine and test - Optimize for maximum response

How to Use

Provide information about what you're selling and to whom:

Example prompts:

• "Write a sales letter for my [product/service]"
• "Create a long-form landing page for [offer]"
• "Write direct mail copy for [campaign]"
• "Help me craft headlines for [product]"
• "Improve this existing sales letter: [paste copy]"
• "Write a VSL script using Halbert/Kennedy principles"

Information that helps:

• What you're selling (product/service details)
• Who you're selling to (target customer)
• The main problem you solve
• Your unique mechanism or approach
• Testimonials and proof points
• Current price and offer structure
• Any urgency or scarcity elements

Instructions

Phase I: Research (Before You Write)

The Customer Avatar Deep-Dive

Before writing a word, answer Kennedy's essential questions:

Kennedy's Rule: Spend 80% of your time on research, 20% on writing.

Find the "Starving Crowd"

Halbert's #1 principle: The market matters more than the copy.

Signs of a "starving crowd":

• They're actively searching for solutions
• They've already tried (and failed) with other products
• They have disposable income and willingness to spend
• The problem is urgent (not "nice to have")
• They're easy to reach with your message

Collect Your Proof Arsenal

Gather all credible proof elements:

• Customer testimonials (specific results)
• Case studies with numbers
• Before/after demonstrations
• Expert endorsements
• Media mentions
• Scientific studies
• Years in business
• Number of customers served

Phase II: The Big Idea

Every great sales letter has ONE big idea that hooks the reader.

Finding Your Big Idea

The big idea should be:

• Emotionally compelling (creates desire or fear)
• Intellectually interesting (makes them curious)
• Believable yet surprising (credible but new)

Phase III: The Headline

The headline does 80% of the work. If it fails, nothing else matters.

Halbert's Headline Principles

1. Make it specific - Numbers and details create believability
2. Promise a benefit - What's in it for them?
3. Create curiosity - But don't be clever-cryptic
4. Qualify the reader - Self-select your audience

Kennedy's Headline Formulas

The "How To" Formula:

How to [Achieve Desired Result] Without [Common Objection]

Examples:
- How to Lose 20 Pounds Without Giving Up Your Favorite Foods
- How to Double Your Business Without Working More Hours

The "Secrets" Formula:

The Secret of [Achieving Something Desirable]

Examples:
- The Secret of Making People Like You
- The Secret Six-Figure Consultants Don't Want You to Know

The "Warning" Formula:

Warning: Don't [Do Common Action] Until You Read This

Examples:
- Warning: Don't Buy Another Diet Program Until You Read This
- Warning: Don't Hire a Financial Advisor Until You Read This

The "Reason Why" Formula:

[Number] Reasons Why [Target Audience] Are [Achieving Result]

Examples:
- 7 Reasons Why Smart Investors Are Moving to Gold
- 5 Reasons Why Top Athletes Eat This Before Games

The "Question" Formula:

Do You Make These [Number] Mistakes in [Activity]?

Examples:
- Do You Make These 7 Mistakes in Job Interviews?
- Are You Making These Costly Tax Errors?

Phase IV: The Structure

Classic Long-Form Sales Letter Structure

1. HEADLINE
   └── Grabs attention, makes the main promise

2. SUBHEADLINE
   └── Qualifies reader or expands the promise

3. OPENING (The Lead)
   └── Hook them in the first 50 words
   └── Identify the problem they're experiencing
   └── Show you understand their pain

4. CREDIBILITY STATEMENT
   └── Why should they listen to you?
   └── Brief, not braggy

5. THE STORY / EPIPHANY
   └── Your journey or a customer's journey
   └── The discovery that changed everything
   └── Build emotional connection

6. THE MECHANISM
   └── What makes your solution work
   └── Why it's different from what they've tried
   └── The "secret sauce" explained

7. BENEFITS (Not Features)
   └── Everything they'll get/achieve
   └── Paint vivid pictures of results
   └── Use bullet points for scanability

8. PROOF
   └── Testimonials with specific results
   └── Case studies
   └── Demonstrations
   └── Third-party validation

9. THE OFFER
   └── Exactly what they're getting
   └── Stack the components
   └── Assign value to each piece

10. BONUSES
    └── Additional value items