---
name: Email Copywriting
slug: email-copywriting
category: Writing
description: Provides methodologies for email copywriting including subject line psychology, preheader optimization, CTA design, and scannable body structure. Use for crafting newsletters, promotional emails, or any email marketing copy.
github: "https://github.com/revfactory/harness-100/tree/main/en/03-newsletter-engine/.claude/skills/email-copywriting"
stars: 1194
forks: 420
install: "git clone https://github.com/revfactory/harness-100"
added: 2026-07-20T06:49:19.012Z
last_synced: 2026-07-29T06:37:27.538Z
canonical_url: "https://dirskills.com/skills/email-copywriting"
---

# Email Copywriting

Provides methodologies for email copywriting including subject line psychology, preheader optimization, CTA design, and scannable body structure. Use for crafting newsletters, promotional emails, or any email marketing copy.

**Install:** `git clone https://github.com/revfactory/harness-100`

## README

# Email Copywriting — Email Copywriting Methodology

Writing techniques specific to the email medium, used by the copywriter agent when crafting newsletters.

## Why Email Copy Is Different

Blog posts are found via search. Social media posts are discovered in feeds. Emails must be **opened from the inbox** to be read. The battle is won or lost at the subject line, and within 7 seconds of opening, readers decide whether to scroll or close.

## Subject Line Design: The CURVE Framework

| Element | Description | Example |
|---------|-------------|---------|
| **C**uriosity | Create an information gap | "The email secret most marketers don't know" |
| **U**rgency | Create time pressure | "Only until midnight — sharing this strategy" |
| **R**elevance | Connect to the reader's current interests | "[AI Trends] 3 things you need to know this week" |
| **V**alue | Promise a specific benefit | "3 minutes to read, 3 hours saved" |
| **E**motion | Trigger an emotion | "I made this mistake too (and deeply regretted it)" |

### 12 Subject Line Formulas

| # | Formula | Template |
|---|---------|----------|
| 1 | Number + Benefit | "[N] ways to achieve [result]" |
| 2 | Question | "Struggling with [reader's pain point]?" |
| 3 | How-to | "How to [desired result] (expert-verified)" |
| 4 | Negative | "If you're making [mistake], stop now" |
| 5 | Social Proof | "The [tool] that [famous person/company] actually uses" |
| 6 | Contrast/Reversal | "You think [conventional wisdom]? It's the opposite" |
| 7 | Personal Story | "One thing I learned from [experience]" |
| 8 | Breaking News | "News just dropped that will reshape [industry]" |
| 9 | Listicle Preview | "In this week's newsletter: [Topic 1], [Topic 2], and..." |
| 10 | Exclusive/Scarcity | "Subscriber-only [content] revealed" |
| 11 | Challenge/Provocation | "If you want [result], drop this [habit]" |
| 12 | Open Loop | "[Situation] happened. The result..." |

### Subject Line Optimization Rules

- **Length**: 28–50 characters (avoids truncation on mobile)
- **Personalization**: [Name] insertion boosts open rates by an average of 26% (but don't overuse)
- **Emojis**: 1 is acceptable; 2+ risks spam filter triggers
- **Capitalization**: No all-caps; sentence case only
- **A/B Variable**: Always write 2+ subject lines for A/B testing

## Preheader (Preview Text) Strategy

The preheader is the subject line's **supporting weapon**. When the subject line sparks curiosity, the preheader delivers specifics.

| Strategy | Description | Example |
|----------|-------------|---------|
| **Complementary** | Expand on the subject line's info | Subject: "Top 3 AI stories this week" → Preheader: "OpenAI's new model + Google strikes back + startup jackpot" |
| **Continuation** | Continue the subject line's sentence | Subject: "We cut our marketing budget by 50%..." → Preheader: "and revenue actually went up" |
| **CTA** | Directly prompt action | Subject: "Free template release" → Preheader: "Download now (48-hour window)" |
| **Social Proof** | Show others' reactions | Preheader: "127 replies to our last issue" |

- **Length**: 40–90 characters (varies by email client; Gmail shows up to 90)
- **Prohibited**: Repeating the subject line verbatim

## Body Structure: F-Pattern Scan Design

Email readers don't read — they **scan** in an F-shaped pattern.

### Newsletter Body Design Principles

1. **The first sentence is everything**: The 1–2 sentences visible on open determine whether the entire email gets read
2. **Inverted pyramid**: Most important information at the top, supplementary info below
3. **Visual breaks**: Insert subheadings, dividers, images, or pull quotes every 3–4 sentences
4. **One paragraph = one idea**: 2–3 sentences per paragraph; never exceed 5
5. **Link strategy**: Place important links in the top 1/3 of the body (drive clicks before scrolling)

### Recommended Section Structure

```
[Intro: 1–2 sentences — this issue's core message]

---

[Main Story: Most important content]
- Subheading
- Body (5–8 sentences)
- CTA button or link

---

[Sub Stories 2–3: Short curations]
- 2–3 sentences each + link

---

[Recommended Resources / Tools / Books]

---

[Closing: Question for reader or preview of next issue]
```

## CTA (Call-to-Action) Design

### CTA Placement Strategy

| Position | CTA Type | Expected Conversion |
|----------|---------|-------------------|
| **Top (first 200px)** | Primary CTA — this issue's main action | Highest |
| **Middle (after main story)** | Secondary CTA — explore related content | Medium |
| **Bottom (closing)** | Repeat CTA — same as top or share prompt | Safety net |

### CTA Copy Formula

- **Start with a verb**: "Read the guide," "Download now," "Check it out"
- **Include specific benefit**: "Read the 5-minute guide" > "Learn more"
- **Button design**: Buttons get 28% higher CTR than text links
- **Add urgency**: "48-hour window," "First 100 only"

## Tone & Voice Matrix

| Newsletter Type | Recommended Tone | First Person | Reader Address | Emoji Use |
|----------------|-----------------|--------------|---------------|-----------|
| Business/Industry | Professional + witty | "I/we" | "you" | Minimal (section dividers) |
| Tech/Dev | Casual + practical | "I" | "you" | Freely |
| Lifestyle | Intimate + emotional | "I" | "you" | Generous |
| Curation/News | Objective + concise | "The editorial team" | "readers" | Almost none |

## A/B Test Variable Priority

Test in order of impact (one variable at a time):

1. **Subject line** (direct impact on open rate — test first)
2. **Send time** (day + time slot)
3. **CTA copy/design** (click-through rate)
4. **Body length** (long-form vs. short-form)
5. **Preheader** (fine-tuning open rate)
6. **Sender name** (brand name vs. personal name)