Overview
Migma’s email generation technology is backed by rigorous research into email deliverability, user engagement, and inbox placement. These case studies present our findings and demonstrate why Migma-generated emails consistently outperform alternatives.Research-Driven
100,000+ emails analyzed
Real-World Data
Actual inbox placement metrics
Multiple Industries
B2B, E-commerce, SaaS, Media
Actionable Insights
Practical recommendations
Available Case Studies
Dark Mode & Email Deliverability
Key Finding: Emails with proper dark mode support show 7.6% higher inbox placement rates.
- 50,000+ emails analyzed
- 60%+ of users prefer dark mode
- 2x better engagement with dark mode optimization
- Cross-client testing results
HTML vs Plain-Text Deliverability
Key Finding: High-quality HTML emails outperform plain-text by 20.5% in inbox placement.
- 100,000+ emails tested
- 6-month comprehensive study
- B2B cold outreach analysis
- Debunking the plain-text myth
Research Methodology
Our Approach
All Migma case studies follow rigorous research standards:Large Sample Sizes
Large Sample Sizes
- Minimum 50,000 emails per study
- Multiple industries and use cases
- Diverse geographic distribution
- Extended time periods (3-6 months)
Real-World Testing
Real-World Testing
- Actual email campaigns (not laboratory tests)
- Multiple email service providers
- Real recipient behavior tracking
- Seed list testing for inbox placement
Controlled Variables
Controlled Variables
- A/B testing methodology
- Control groups for comparison
- Isolated variable testing
- Statistical significance validation
Comprehensive Metrics
Comprehensive Metrics
- Inbox placement rates
- User engagement (time, clicks, scrolls)
- Spam complaint rates
- Cross-client rendering quality
- ROI impact measurement
Email Clients Tested
Our research covers the full spectrum of email clients: Desktop:- Gmail (Web)
- Outlook.com
- Apple Mail (macOS)
- Outlook 2021/2019/2016 (Windows & Mac)
- Yahoo Mail
- ProtonMail
- Thunderbird
- Gmail App (iOS & Android)
- Apple Mail (iPhone & iPad)
- Outlook Mobile (iOS & Android)
- Samsung Email
- Yahoo Mobile
- Real device testing (not simulators)
- Seed list inbox placement tracking
- User behavior analytics
- Engagement metric tracking
Key Insights
1. Dark Mode Is Critical
60%+ of email users prefer dark mode. Emails that break in dark mode signal low quality to both users and email providers.
- 7.6% higher inbox placement with dark mode support
- 2x better engagement (time spent, clicks)
- 4x fewer spam complaints
2. Quality HTML Outperforms Plain-Text
The “plain-text is better” myth is wrong. High-quality HTML emails achieve 20.5% higher inbox placement than plain-text.
- Professional HTML signals legitimate business
- Better engagement metrics (2.5x more time spent)
- Plain-text associated with spam and low-effort outreach
3. Email Quality Matters
Not all HTML is equal. The distinction between high-quality and low-quality HTML is significant:
What makes HTML “high-quality”:
- Clean code structure (semantic HTML)
- Cross-client compatibility (40+ clients)
- Dark mode optimization
- Mobile responsive design
- Proper email standards (CAN-SPAM, GDPR)
- Optimized assets (compressed images, alt text)
Practical Applications
For Marketing Teams
Optimize for dark mode - Test every email in both light and dark modes
Use professional HTML - Don’t rely on plain-text for “personalization”
Test before sending - Use Email Preflight to catch issues
Monitor metrics - Track inbox placement, not just open rates
Invest in quality - High-quality emails have measurable ROI
For Cold Outreach
Professional HTML templates - Branded design builds credibility
Personalize content - HTML structure + personal message
Quality over quantity - 100 inbox emails > 1000 spam emails
Track real metrics - Measure inbox placement and reply rates
For Email Platforms
Generate clean HTML - Follow email standards, not web standards
Automatic dark mode - Make it default, not optional
Cross-client testing - Ensure compatibility everywhere
Educate users - Explain why quality matters for deliverability
How Migma Applies This Research
Automatic Optimization
Every Migma-generated email benefits from our research: Dark Mode:- Automatic dark mode optimization
- Cross-client compatibility testing
- Smart color adaptation
- Layout preservation in both modes
- Clean, production-ready code generation
- Email-safe HTML and CSS
- Proper standards compliance
- Optimized assets automatically
- Email Preflight testing (30+ devices)
- Spam score checking
- Link validation
- Mobile responsiveness verification
Continuous Improvement
Our research informs product development:- New features based on deliverability findings
- Testing across emerging email clients
- Adaptation to changing email provider algorithms
- Best practices integrated into AI generation
Future Research
Upcoming Studies
We’re currently researching:AI-Generated Images
Impact of AI-generated vs stock images on engagement
Subject Line Optimization
ML-powered subject line testing for open rates
Personalization Scale
Balancing personalization with automation
International Deliverability
Regional differences in email provider behavior
Research Partnership
Interested in collaborating on email deliverability research?Partner With Us
Conduct joint research studies
Share Your Data
Contribute to future case studies
Related Resources
Best Practices Guide
Apply research findings to your emails
Email Preflight
Test emails based on our research
FAQ: Deliverability
Common questions about our findings
Creating Emails
Generate optimized emails with Migma