Email Newsletter Template Builder

When to use this skill

User asks to create a newsletter
User needs email subject lines
User wants email campaign templates
User mentions email marketing copy
User needs A/B testing variants

Workflow

[ ] Identify email type and goal
[ ] Generate subject line variants
[ ] Create preheader text
[ ] Build email structure
[ ] Write content blocks
[ ] Add CTAs and footer

Instructions

Step 1: Identify Email Type

| Email Type | Goal | Structure | | ------------- | ------------------ | --------------------------- | | Newsletter | Engagement, value | Hero + 3-5 content blocks | | Promotional | Sales, conversions | Hero + offer + CTA | | Welcome | Onboarding | Personal intro + next steps | | Announcement | Awareness | News + details + CTA | | Re-engagement | Win-back | Hook + incentive + CTA | | Transactional | Information | Order details + support |

Step 2: Subject Line Generation

Subject line formulas:

| Formula | Example | | ---------------- | ------------------------------------------- | | Number + Benefit | "5 ways to speed up your website today" | | How to + Outcome | "How to double your open rates" | | Question | "Is your portfolio costing you interviews?" | | Curiosity gap | "The one thing top developers never skip" | | Urgency | "Last chance: 40% off ends tonight" | | Personal | "John, your weekly digest is ready" | | FOMO | "Everyone's talking about this new feature" | | Direct benefit | "Get 3 hours back every week" |

Subject line best practices:

30-50 characters (mobile preview)
Front-load key information
Avoid spam triggers (FREE!!!, 💰💰💰)
Test with/without emoji
Match preheader text

A/B test variants:

## Subject Line Variants

**Version A (Benefit-focused):**
Subject: 5 tools that cut my development time in half
Preheader: Plus the one tool I stopped using

**Version B (Curiosity):**
Subject: I stopped using this popular tool
Preheader: And my productivity doubled

**Version C (Question):**
Subject: Are you still using [Tool]?
Preheader: There's a faster alternative

Step 3: Preheader Text

Preheader guidelines:

40-100 characters
Complement (don't repeat) subject
Add context or secondary hook
Include CTA preview if relevant

| Subject | Poor Preheader | Good Preheader | | ------------------------------ | --------------------------- | -------------------------------------- | | "5 ways to speed up your site" | "Read our latest blog post" | "Plus the #1 mistake slowing you down" | | "Your order has shipped" | "Order confirmation" | "Arrives Thursday. Track it here →" |

Step 4: Email Structure Templates

Newsletter template:

<!-- Preheader (hidden) -->
<span style="display:none;">[Preheader text here]</span>

<!-- Header -->
[Logo] [Navigation: Blog | Products | Contact]

<!-- Hero Section -->
[Featured image or heading] [Brief intro: 2-3 sentences] [Primary CTA button]

<!-- Content Block 1 -->
[H2: Section title] [Thumbnail image] [Summary: 2-3 sentences] [Read more link]

<!-- Content Block 2 -->
[H2: Section title] [Thumbnail image] [Summary: 2-3 sentences] [Read more link]

<!-- Content Block 3 -->
[H2: Section title] [Thumbnail image] [Summary: 2-3 sentences] [Read more link]

<!-- Secondary CTA -->
[H2: Call to action heading] [Brief value prop] [CTA button]

<!-- Footer -->
[Social icons] [Unsubscribe | Preferences | View in browser] [Company address]
[Copyright]

Promotional template:

<!-- Preheader -->
<span style="display:none;">[Urgency or key offer]</span>

<!-- Header -->
[Logo]

<!-- Hero -->
[Bold headline with offer] [Hero image of product/service] [Key benefit: 1
sentence] [Primary CTA: "Shop Now" / "Get Started"]

<!-- Social Proof -->
[Testimonial or rating] [Customer logo bar]

<!-- Benefits -->
[Benefit 1 with icon] [Benefit 2 with icon] [Benefit 3 with icon]

<!-- Urgency -->
[Countdown or deadline] [Secondary CTA]

<!-- Footer -->
[Unsubscribe | View in browser] [Address]

Welcome email template:

<!-- Preheader -->
<span style="display:none;">Here's what to do first...</span>

<!-- Header -->
[Logo]

<!-- Hero -->
[Personalized greeting: "Welcome, {first_name}!"] [What they signed up for /
what to expect] [Founder photo or brand image]

<!-- Quick Wins -->
[H2: Get started in 3 steps] [Step 1] [Icon + title + 1-sentence description]
[Step 2] [Icon + title + 1-sentence description] [Step 3] [Icon + title +
1-sentence description] [Primary CTA: "Complete your profile" / "Start
tutorial"]

<!-- Value Reminder -->
[H2: What you'll get] [Bullet list of benefits]

<!-- Personal Touch -->
[Sign-off from founder/team] [Photo + signature] [P.S. line with secondary offer
or tip]

<!-- Footer -->
[Support link] [Social icons] [Unsubscribe | Preferences]

Step 5: Content Block Writing

Block structure:

## [Compelling headline]

[1-2 sentences summarizing the value or key point]

[Optional: key stat or quote]

[CTA: "Read more →" or "Watch now →"]

Block examples:

## Why Your Images Are Slowing Down Your Site

Large, unoptimized images are the #1 cause of slow page loads.
Here's how to fix it in under 10 minutes.

→ Read the full guide

---

## New Feature: Dark Mode Support

You asked, we delivered. Enable dark mode in your dashboard
settings for easier late-night work sessions.

→ Try it now

---

## Case Study: How Acme Corp Increased Conversions 47%

See exactly how they optimized their checkout flow and
the surprising change that made the biggest difference.

→ Read the case study

Step 6: CTA Best Practices

Button copy:

| Weak | Strong | | ---------- | ---------------------- | | Click here | Get your free guide | | Submit | Start my trial | | Learn more | See how it works | | Buy now | Add to cart - $29 | | Download | Download the checklist |

CTA guidelines:

Action verb + benefit
2-5 words
First person ("Get my..." vs "Get your...")
Contrast color from email background
Minimum 44x44px tap target

Step 7: Footer Requirements

Required elements:

<!-- Social Links -->
<a href="#">Twitter</a> | <a href="#">LinkedIn</a> | <a href="#">Instagram</a>

<!-- Legal -->
<p>You're receiving this because you signed up at [website].</p>

<a href="{unsubscribe_link}">Unsubscribe</a> |
<a href="{preferences_link}">Email preferences</a> |
<a href="{browser_link}">View in browser</a>

<!-- Address (CAN-SPAM required) -->
<p>
  [Company Name]<br />
  [Street Address]<br />
  [City, State ZIP]
</p>

<!-- Copyright -->
<p>© 2026 [Company Name]. All rights reserved.</p>

Step 8: Mobile Optimization

Mobile-first guidelines:

| Element | Mobile Spec | | ------------- | ---------------------------- | | Width | 100%, max 600px | | Font size | Body 16px+, headings 22px+ | | Line height | 1.5-1.6 | | Button size | Full width, 48px height min | | Images | 100% width, max-width set | | Padding | 20px sides minimum | | Single column | Stack all content vertically |

Responsive image:

<img
  src="image.jpg"
  alt="Description"
  width="600"
  style="max-width: 100%; height: auto; display: block;"
/>

Step 9: Testing Checklist

Before sending:

[ ] Subject line under 50 characters
[ ] Preheader complements subject
[ ] All links working
[ ] Images have alt text
[ ] Unsubscribe link present
[ ] Physical address included
[ ] Renders on mobile (test with Litmus/Email on Acid)
[ ] Plain text version included
[ ] Personalization tokens work ({first_name})
[ ] Sent from recognizable sender name

Output Format

## Email Campaign: [Name]

**Type:** [Newsletter/Promotional/Welcome/etc.]
**Goal:** [Engagement/Sales/Onboarding/etc.]

---

### Subject Line Variants

**A:** [Subject line]
**B:** [Subject line variant]

**Preheader:** [Preheader text]

---

### Email Content

[Full email content with sections marked]

---

### Notes

- Send time: [Recommended day/time]
- Segment: [Target audience]
- A/B test: [What to test]

Validation

Before completing:

[ ] Subject line A/B variants provided
[ ] Preheader text included
[ ] Clear value in first paragraph
[ ] CTAs are action-oriented
[ ] Mobile-friendly structure
[ ] Footer has required elements
[ ] Consistent with brand voice

Error Handling

No clear goal: Ask for campaign objective (traffic, sales, engagement).
Too much content: Limit to 3-5 content blocks; link to full articles.
Missing personalization: Add {first_name} or segment-specific content.
Spam trigger words: Avoid "FREE", "Act now", excessive caps/punctuation.
No mobile consideration: Use single column, large fonts, stacked CTAs.

Resources

Really Good Emails - Inspiration
Litmus - Email testing
Mail-Tester - Spam score check
Email on Acid - Cross-client testing