Definition
Mobile conversion in email marketing refers to the rate at which subscribers complete a desired action after opening an email on a mobile device. With over 60% of email opens occurring on mobile devices, mobile conversion is often the most important conversion metric for email programmes.
Optimising for mobile conversion requires attention to design, load times, thumb-friendly tap targets, and seamless transitions from email to mobile-optimised landing pages.
Key Mobile Optimisation Factors
| Factor | Impact | Best Practice |
|---|---|---|
| Responsive design | Email adapts to screen size | Use fluid layouts, scalable images |
| Font size | Readability without zooming | Minimum 14px body text, 16px for readability |
| Tap targets | Ease of clicking links and buttons | Minimum 44x44 pixel touch targets |
| Load time | How fast email content displays | Optimise image file sizes, limit total email weight to under 100KB |
| CTA placement | Where the action button appears | Above the fold on mobile screens |
| Landing page | Post-click mobile experience | Mobile-responsive pages that match email design |
Mobile Conversion Optimisation Checklist
- Email template is fully responsive (tested on iOS and Android)
- Primary CTA is visible without scrolling
- Buttons are at least 44x44 pixels with adequate spacing
- Body text is at least 14px for readability
- Links are spaced to prevent accidental taps
- Images are compressed and properly sized
- Email loads within 3 seconds on mobile connections
- Landing page is mobile-optimised
- Forms are easy to complete on mobile
- Checkout process works seamlessly on mobile devices
Mobile-Specific Best Practices
- Use a single-column layout that stacks content vertically
- Place the primary CTA at the top of the email
- Preheader text should complement the subject line on mobile lock screens
- Test emails on actual mobile devices, not just simulators
- Minimise the number of form fields for mobile users
- Use large, thumb-friendly buttons rather than text links for primary actions
Metrics
- Mobile open rate vs desktop open rate
- Mobile click-through rate vs desktop
- Mobile conversion rate vs desktop
- Mobile revenue per email vs desktop
- Bounce rate from mobile clicks
- Mobile-specific engagement trends over time
Related Glossary Terms
Email A/B Test Examples
Email A/B test examples show practical testing scenarios that help marketers improve open rates, click-through rates, and conversions through data-driven experimentation.
Email Analytics
The measurement, collection, analysis, and reporting of email performance data to understand subscriber behaviour and optimise campaign results.
Email Marketing Best Practices
Comprehensive guidelines covering list building, design, copy, sending strategy, deliverability, and analytics for email marketing.
Email Campaign Optimisation
Email campaign optimisation is the systematic process of improving campaign performance through testing, data analysis, and iterative refinement of every element from subject lines to send times.
Multivariate Testing
Multivariate testing (MVT) tests multiple variables simultaneously to identify the optimal combination of email elements for maximum engagement or conversion.
Email Multivariate
An advanced testing methodology that simultaneously tests multiple variable combinations to identify the optimal email variant using factorial design principles.
Frequently Asked Questions
Mobile conversion rates vary by industry but are typically 15-30% lower than desktop conversion rates for the same email. A good mobile conversion rate is 1-3% for ecommerce and 2-5% for B2B content downloads. The goal is to close the gap between mobile and desktop conversion rates.
Common reasons include: small screens make comparison shopping harder, forms are more difficult to complete on mobile, checkout processes are not fully mobile-optimised, and accidental clicks are more common on mobile. Addressing each of these factors improves mobile conversion rates.
Use mobile-specific UTM parameters to segment mobile traffic in your analytics. Compare conversion rates by device type. Use session recording tools to observe mobile user behaviour. Conduct usability testing with real mobile users on actual devices. Test each stage of the mobile conversion funnel for drop-off points.