Sales Letter Copywriter
Classic direct-response sales letters refined for the digital age.
Why Hire a Specialist Sales Letter Copywriter?
The sales letter is the foundation of direct-response copywriting. Whether it arrives in a physical mailbox or appears on a screen, the format is the same: a personal, persuasive communication from one person to another, designed to produce a specific action. Writing effective sales letters requires mastery of voice, pacing, storytelling, and the subtle art of making the reader feel like the letter was written specifically for them. A specialist sales letter copywriter understands these principles because the format tolerates no shortcuts — every word either earns the next word or loses the reader.
The Lost Art of the Sales Letter
Before VSLs and webinars, there was the sales letter — and the principles that made great sales letters work are the same principles that drive conversions today. I cut my teeth writing direct mail for Apple, IBM, and Citibank in the early 1990s, learning sales letter craft from the direct mail masters who could generate millions from a single piece of paper, a stamp, and a compelling argument. Those fundamentals — clear offers, strong guarantees, compelling proof, and irresistible calls to action — inform every piece of copy I write today, regardless of medium.
TSL Copywriting: The Digital Sales Letter
The TSL (Text Sales Letter) is the digital evolution of the classic sales letter. Instead of arriving in the mail, it appears on a web page — but the persuasion principles are identical. TSLs are particularly powerful in health, finance, and info product markets where prospects respond to personal, story-driven selling. As a sales letter copywriter, I bring the same disciplined approach to TSL copywriting that built the fortunes of the original direct mail industry: deep research, compelling narratives, irresistible offers, and systematic testing of every element.
Direct Mail Roots, Digital Results
My career started in Fortune 500 direct mail, writing sales letters for brands like Apple Computer, Citibank, IBM, and National Geographic. That training gave me something most digital copywriters never develop: the discipline of writing copy where every word costs money to print and mail. When every extra sentence increases your postage bill, you learn to make every word count. I bring that same discipline to digital sales letters and TSLs — no filler, no fluff, just persuasion-dense copy that drives action.
Sales Letter Copywriting Across Formats
Whether you need a classic direct mail package, a digital TSL for a ClickBank offer, a magalog-style sales letter, or a letter-format email series, my sales letter copywriting adapts the fundamental principles to your specific format and audience. I understand how to modulate voice, length, and persuasion intensity based on the relationship between sender and reader, the complexity of the offer, and the competitive landscape of your market. Every sales letter I write is engineered to convert — not just communicate.
What You Get
Every deliverable is built on proven direct-response frameworks — not templates.
Full Sales Letter Copy
Complete sales letter or TSL (typically 2,000-8,000 words) with personal voice, storytelling arc, proof elements, and compelling close.
Opening Variations
Multiple lead and opening options for split testing — story leads, problem-agitation leads, and curiosity leads.
Order Form Copy
Persuasive order form or checkout page copy that reinforces the offer and reduces cart abandonment.
Envelope/Subject Line Teaser Copy
For direct mail: envelope teaser copy. For digital TSLs: email subject lines and pre-header text to drive opens.
Audience Research Brief
Comprehensive research document mapping prospect psychology, competitive landscape, and persuasion opportunities.
Revision Round
One comprehensive revision round with strategic notes on testing and optimization priorities.
Ready to hire a sales letter copywriter?
Book a free strategy call to discuss your project.
What Clients Say
You are our secret weapon. Keep your diary clear, please!
Just reviewed the script...great work! Edits are minimal.
Rob's work is of excellent quality. His writing is very clean.
Rob, high five!! You da Man! Great to get that bump in conversions!
Relevant Work Samples
Examples from my portfolio in this space.
Industries I Write For
Deep experience across verticals that demand direct-response excellence.
Frequently Asked Questions
A sales letter uses a personal, letter-style format — written as if from one person to another. A sales page can use any format including design-heavy layouts with multiple columns and graphics. Sales letters rely more heavily on voice, storytelling, and personal connection. The best format depends on your market, offer, and audience expectations.
A TSL is a long-form text-based sales page that reads like a personal letter from the seller to the prospect. TSLs use storytelling, social proof, and direct-response persuasion techniques to drive conversions. They are particularly effective in health, finance, and info product markets where a personal, story-driven approach resonates with buyers.
Yes. While most of my current work is digital, I started my career writing direct mail for Fortune 500 brands and I still write direct mail packages when the medium fits the strategy. Direct mail has experienced a resurgence as digital ad costs have increased and physical mailboxes have become less cluttered.
As long as necessary to make the complete persuasion case and not a word longer. For simple offers to warm audiences, that might be 1,500 words. For complex offers to cold traffic, that could be 6,000 to 8,000 words or more. I recommend the optimal length based on your specific offer, audience, and funnel position.
Sales letters and TSLs perform exceptionally well in health and supplements, financial services, info products, and any market where the buyer responds to personal, story-driven selling. They also work well for higher-priced offers where trust and personal connection are critical to the purchase decision.
Sales letter copywriting is priced on a project basis depending on the length, complexity, and research requirements. Pricing is discussed during our initial strategy call. Whether you need a digital TSL or a full direct mail package, the investment is structured to deliver measurable return through increased conversions.