Email Marketing

Create high-performing email campaigns with optimal deliverability and engagement.

Overview

This skill provides comprehensive guidance on email marketing strategy, campaign creation, deliverability optimization, list management, automation, compliance, and performance measurement to maximize email ROI.

Email Strategy Framework

Campaign Types

List Building Strategies

Opt-In Methods:

• Website signup forms (header, footer, sidebar)
• Content upgrades and lead magnets
• Exit-intent popups
• Landing pages
• Social media lead ads
• In-store signups
• Webinar registrations
• Gated content

Double Opt-In Benefits:

• Higher quality subscribers
• Better engagement rates
• Improved deliverability
• GDPR compliance
• Reduced spam complaints

Deliverability Optimization

Authentication Setup

SPF (Sender Policy Framework):

• Specifies authorized sending servers
• Prevents email spoofing
• Required for deliverability

DKIM (DomainKeys Identified Mail):

• Adds digital signature to emails
• Verifies email integrity
• Prevents tampering

DMARC (Domain-based Message Authentication):

• Builds on SPF and DKIM
• Sets policy for failed authentication
• Provides reporting
• Mandatory for bulk senders

Sender Reputation Management

Factors Affecting Reputation:

• Bounce rates (keep <2%)
• Spam complaint rates (keep <0.1%)
• Engagement rates (opens, clicks)
• Email volume consistency
• List quality and hygiene

List Hygiene Practices:

• Remove hard bounces immediately
• Suppress soft bounces after 3-5 attempts
• Remove inactive subscribers (90-180 days)
• Validate email addresses at signup
• Monitor engagement metrics
• Implement re-engagement campaigns

Email Design and Content

Design Best Practices

Mobile Optimization (60%+ opens on mobile):

• Single column layout
• Minimum 14px font size
• Large, tappable buttons (44x44px minimum)
• Compressed images
• Responsive design

Visual Hierarchy:

1. Logo/branding
2. Hero image or headline
3. Primary message
4. Call-to-action button
5. Supporting content
6. Footer

Subject Line Optimization

Best Practices:

• 40-50 characters optimal
• Front-load important words
• Create curiosity or urgency
• Personalize when relevant
• Avoid spam triggers
• Test emoji usage

Formulas That Work:

• Question: "Ready to [achieve goal]?"
• Benefit: "Get [benefit] in [timeframe]"
• Urgency: "[Offer] ends [date/time]"
• Curiosity: "The secret to [desired outcome]"

Email Copywriting

Structure:

1. Preheader: Complement subject line
2. Opening: Hook reader immediately
3. Body: Clear, scannable, benefit-focused
4. CTA: Single, clear action
5. P.S.: Reinforce offer

Copywriting Principles:

• Write conversationally
• Focus on benefits, not features
• Use "you" language
• Keep paragraphs short (2-3 lines)
• Use bullet points for scannability

Segmentation and Personalization

Segmentation Strategies

Demographic Segmentation:

• Age, gender, location
• Job title, industry (B2B)
• Income level

Behavioral Segmentation:

• Purchase history
• Browse behavior
• Email engagement
• Cart abandonment
• Lifecycle stage

RFM Segmentation (Ecommerce):

• Recency: When did they last purchase?
• Frequency: How often do they purchase?
• Monetary: How much do they spend?

Personalization Tactics

Basic Personalization:

• First name in subject/body
• Location-based content
• Company name (B2B)
• Birthday/anniversary

Advanced Personalization:

• Dynamic content blocks
• Product recommendations
• Behavioral triggers
• Predictive content
• Send-time optimization

Email Automation

Essential Automated Workflows

Welcome Series (3-5 emails):

1. Immediate: Welcome + brand intro
2. Day 2: Value proposition
3. Day 5: Social proof
4. Day 8: Product overview
5. Day 12: Special offer

Abandoned Cart (3 emails):

1. 1 hour: Reminder
2. 24 hours: Add urgency
3. 3 days: Discount offer

Post-Purchase:

1. Order confirmation
2. Shipping notification
3. Delivery + usage tips
4. Review request
5. Cross-sell/upsell

Win-Back (inactive 90+ days):

1. "We miss you" message
2. Special offer
3. Preference center

Compliance and Privacy

CAN-SPAM Act (US)

Requirements:

• Accurate header information
• Non-deceptive subject lines
• Identify as advertisement
• Include physical address
• Provide opt-out mechanism
• Honor opt-outs within 10 days

GDPR (EU)

Key Requirements:

• Explicit consent
• Clear purpose for data collection
• Right to access and delete data
• Data portability
• Breach notification (72 hours)

Best Practices

• Double opt-in
• Clear privacy policy
• Easy unsubscribe
• Preference center
• Transparent data usage
• Regular list cleaning

Email Analytics

Key Metrics

Deliverability:

• Delivery rate: >95%
• Bounce rate: <2%
• Spam complaint rate: <0.1%

Engagement:

• Open rate: 15-25%
• Click-through rate: 2-5%
• Click-to-open rate: 10-20%
• Conversion rate: 1-5%

Revenue:

• Revenue per email
• Revenue per subscriber
• Email-attributed revenue
• ROI

A/B Testing

What to Test:

• Subject lines
• From name
• Send time/day
• Email content
• CTA copy and design
• Personalization

Testing Methodology:

1. Form hypothesis
2. Minimum 1,000 per variant
3. Send simultaneously
4. Measure statistical significance
5. Implement winner
6. Document learnings

Using the Reference Files

When to Read Each Reference

/references/deliverability-deep-dive.md — Read when troubleshooting deliverability issues, setting up authentication, or improving sender reputation.

/references/campaign-templates.md — Read when creating specific campaign types with proven templates and examples.

/references/automation-workflows.md — Read when building advanced automation sequences or behavioral triggers.

/references/compliance-guide.md — Read when ensuring compliance with CAN-SPAM, GDPR, CASL, or other email regulations.