Definition
Email clients apply different default line heights. Setting it explicitly prevents cramped or oversized text.
Best Practices
- Set line-height explicitly on text-heavy elements.
- Use unitless or fixed values to avoid inheritance quirks.
- Test line spacing on mobile where readers scan quickly.
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Related Glossary Terms
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Accessible CTA (Email)
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Adaptive Design
Adaptive design in email uses predefined layouts that adjust to specific device or client widths, rather than fluidly resizing to every possible screen.
AI-Generated Content in Email
AI-generated content in email is copy, images, code or subject lines produced by artificial intelligence tools to speed up campaign production and testing.
Alt Text
Alt text is the written alternative to an image in an email, displayed when images are blocked, slow to load, or consumed by screen readers.
Autoplay Video in Email
Autoplay video in email refers to the limited ability to play video content automatically when an email is opened, using specific client-supported techniques.
Frequently Asked Questions
Clients seed different base line-heights per font.
Unitless 1.4 to 1.6 typically reads best for body copy.
Yes, fixed pixel heights can clip descenders in some clients.