Email Testing

Increasing the conversion rate of our emails

1. Goal - Optimize email conversions

Email Testing Template

What You've Already Built

In the Website Testing lesson, you learned to systematically optimize landing pages. Now it's time to focus on another critical conversion surface: email. Emails are your direct line to prospects and customers–and they often have the highest ROI of any marketing channel.

What You're Deciding Here

This lesson helps you answer: How do I systematically improve email performance?

Email optimization spans the entire journey from send to conversion:

  • Deliverability: Do emails reach the inbox?
  • Open rates: Do subject lines compel opens?
  • Click rates: Does content drive clicks?
  • Conversion rates: Do emails drive the desired action?

You'll learn to optimize across four dimensions:

  • First Impressions: Subject lines, preview text, sender name
  • Email Content: Value, structure, clarity, visuals
  • Targeting: Segmentation, personalization, timing
  • Delivery: Deliverability, frequency, A/B testing

What Should You Focus On First?

Your starting point depends on where you're losing people:

If Your Deliverability is Low
Focus on technical foundations. Clean your list, authenticate your domain, warm up sending reputation. Nothing else matters if emails don't reach the inbox.

If Open Rates Are Low
Focus on subject lines and sender reputation. Test different approaches, build recognition, deliver value so people want to open your emails.

If Click Rates Are Low
Focus on content and CTAs. Is the value clear? Is the ask obvious? Is the content engaging?

If Conversions Are Low
Focus on alignment between email and landing page. Is the transition smooth? Does the page deliver what the email promised?

Your Decision

By the end of this lesson, you'll understand your email performance across the funnel and have specific experiments designed to improve results.

Audit your email performance
Help me audit my email marketing performance and identify optimization opportunities.
You have access to my Funnel Overview, Metrics, and experiment pipeline context.
Before making recommendations, please ask me:
1.**Email overview**
- What types of emails do you send? (newsletters, nurture sequences, transactional, campaigns)
- What's your approximate list size?
- What platform do you use for email?
2.**Current performance**
- What are your open rates by email type?
- What are your click rates?
- What are your conversion rates (if tracked)?
- What's your unsubscribe rate?
3.**Known issues**
- Are emails landing in spam?
- Which emails perform best/worst?
- What feedback have you received?
4.**Goals and constraints**
- What results would you like to improve most?
- How often do you send?
- Any compliance or brand constraints?
Once you have my answers, provide:
**Performance Analysis**
- How your metrics compare to industry benchmarks
- Where you're losing people in the funnel
- Biggest opportunity areas
**Quick Wins**
- Immediate changes that could improve results
- Low-effort, high-impact fixes
**Strategic Improvements**
- Longer-term optimizations to consider
- System and process changes
**Experiment Ideas**
- Specific tests to run
- Prioritized by expected impact

Outcome: You have an audit of your email performance with prioritized improvements.

Complete email performance audit

2. Email Checklist - What makes a strong email

Before running advanced experiments, ensure your emails meet baseline standards. High-performing emails nail the fundamentals across four areas.

First Impressions

Subscribers decide whether to open in seconds. Make those seconds count.

  • Sender name: Recognizable and trustworthy (personal name often beats company name)
  • Subject line: Short, clear, compelling (avoid spam triggers)
  • Preview text: Extends the subject line with additional value
  • Personalization: Name, company, or relevant details in subject

Email Content

Once opened, the email must deliver value and drive action.

  • Clear value: What does the reader gain from this email?
  • Single focus: One primary message and CTA
  • Scannable format: Headers, bullets, short paragraphs
  • Engaging visuals: Images that reinforce (not replace) the message
  • Clear CTA: Obvious next step, above the fold
  • Concise copy: Respect their time, get to the point

Targeting

The right message to the right person at the right time.

  • Segmentation: Different messages for different audiences
  • Personalization: Content tailored to their situation
  • Behavioral triggers: Emails based on actions, not just schedules
  • Timing: Sent when they're likely to read
  • Lead scoring: More attention to more engaged contacts

Delivery

Technical foundations that ensure emails arrive and perform.

  • Domain authentication: SPF, DKIM, DMARC configured
  • List hygiene: Regular cleaning of bounces and unengaged
  • Sending frequency: Consistent but not overwhelming
  • A/B testing: Always testing something
  • Mobile optimization: Readable on any device
Run the email checklist
Let's run through the email checklist for my key email types.
You have access to my email audit from the previous section.
**For each of my key email types (newsletters, nurture, campaigns), evaluate:**
**First Impressions**
- [ ] Recognizable sender name
- [ ] Compelling subject lines
- [ ] Effective preview text
- [ ] Personalization where appropriate
**Email Content**
- [ ] Clear value proposition
- [ ] Single primary focus/CTA
- [ ] Scannable format
- [ ] Engaging visuals
- [ ] Clear call-to-action
- [ ] Concise copy
**Targeting**
- [ ] Meaningful segmentation
- [ ] Content personalization
- [ ] Behavioral triggers (where appropriate)
- [ ] Optimal send timing
- [ ] Lead scoring (if applicable)
**Delivery**
- [ ] Domain authentication (SPF, DKIM, DMARC)
- [ ] List hygiene practices
- [ ] Appropriate sending frequency
- [ ] A/B testing practice
- [ ] Mobile optimization
**For each gap identified:**
- Explain why it matters
- Suggest a specific fix
- Estimate impact (high/medium/low)
**Create a prioritized action list** of email improvements.

Outcome: You have a checklist assessment with prioritized fixes for your emails.

Complete email checklist assessment

3. Email Optimization - Systematic improvement

With your audit complete and checklist gaps identified, it's time to design specific email experiments. Email is particularly well-suited to testing because you can split audiences and measure results quickly.

High-Impact Test Areas

Based on typical results, these areas often yield the biggest improvements:

Subject Lines
Subject lines have outsized impact on open rates. Test:

  • Length (short vs. longer)
  • Personalization (name, company)
  • Urgency vs. curiosity vs. benefit-focused
  • Questions vs. statements
  • Emojis (use sparingly, test impact)

Sender Name
Who the email appears to come from affects opens. Test:

  • Personal name (Ben from Pirate Skills)
  • Company name
  • Role (CEO, Support Team)
  • Combinations

Email Structure
How you present content affects engagement. Test:

  • Plain text vs. designed HTML
  • Length (short vs. long)
  • Number of links and CTAs
  • Image usage (more vs. fewer)
  • Opening hook approaches

Calls-to-Action
The CTA is where clicks happen. Test:

  • Button vs. text link
  • CTA copy and positioning
  • Single vs. multiple CTAs
  • Above vs. below the fold

Send Timing
When you send affects opens and engagement. Test:

  • Day of week
  • Time of day
  • Timezone optimization
  • Triggered vs. scheduled

Segmentation and Personalization
Relevance drives results. Test:

  • Segment-specific messaging
  • Dynamic content blocks
  • Personalization depth (name vs. full context)
Design email experiments
Based on our audit and checklist, help me design specific email experiments.
You have access to my email checklist assessment and experiment pipeline.
**Design 3-5 email experiments:**
For each experiment:
1.**Target Email/Campaign**
- Which email or campaign are we testing?
- What's the current performance?
2.**Hypothesis**
- What do we believe?
- Why do we believe it?
- What specific change are we making?
3.**Test Design**
- Control: Current version
- Variant: Proposed change
- Split: How we'll divide the audience
4.**Success Metrics**
- Primary metric (open rate, click rate, conversion)
- Secondary metrics
- Success threshold
5.**Implementation**
- What needs to change?
- Any technical setup needed?
6.**Timeline**
- How many sends to include?
- Sample size needed?
- When to evaluate?
**Prioritize the experiments** by expected impact and ease.
**Add these to my experiment pipeline** in the proper format.

Outcome: You have specific email experiments ready to run.

Design email experiments

4. Your Email Testing Library

Creating Your Email Testing Document

Throughout this lesson, you've audited your email performance, run the checklist, and designed experiments. Now it's time to consolidate everything into a single reference document for ongoing email optimization.

The Goal: An Email Optimization System

This Email Testing document will serve as your:

  • Reference for email standards and best practices
  • Record of performance audits
  • Experiment tracker for email tests
  • Learning log for what works in your emails

Having your email optimization documented means you build institutional knowledge about what resonates with your audience.

Create your Email Testing document
I've completed my email audit, checklist, and experiment design.
You have access to all my email testing discussions from the previous sections in this project.
Now I need you to extract and organize everything into a comprehensive document: "[Business Name] - Email Testing.md"
**Structure the document as follows:**
# [Business Name] - Email Testing
## Overview
- Summary of our email optimization approach
- Key email types and their purposes
- Baseline performance metrics
## Performance Audit
- Current metrics by email type
- Comparison to benchmarks
- Biggest opportunity areas
- Known issues and fixes
## Checklist Results
- Summary of checklist assessment
- Standards we're maintaining
- Areas for improvement
## Active Experiments
- Currently running email tests
- For each: email/campaign, hypothesis, variant, metric
## Experiment History
- Completed email experiments
- Results and learnings
- What worked and what didn't
## Best Practices (Our Standards)
- Subject lines: What works for us
- Sender names: Our approach
- Content structure: Our format
- CTAs: Our standards
- Timing: Our optimal windows
## Templates and Examples
- High-performing subject lines
- Effective email structures
- Winning CTAs
## Technical Notes
- Deliverability setup
- List hygiene practices
- Segmentation approach
**Extract all the findings and experiment plans from our previous conversations and organize them into this structure.**
Save this as "[Business Name] - Email Testing.md" in the project.

Outcome: You have a complete Email Testing document that captures your email optimization system.

Download and upload your Email Testing document to your Claude project