Email signatures on mobile: best practices and tips
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A large share of emails is read on smartphones. A signature designed only for a large screen quickly becomes unreadable on mobile.
Favor a vertical structure
Multi-column signatures squeeze poorly onto a small screen. A simple, stacked structure stays readable at every width.
Light, sharp images
Provide a high-resolution but lightweight logo and banner, displayed at a fixed size. The rendering stays sharp on high-density screens without slowing down loading.
Links that are easy to tap
Social icons and links must be spaced far enough apart to be tapped with a finger without errors.
Clickable information
On mobile, a clickable email address or website is immediately useful. Check that every link works.
Signature sent from a mobile
Mobile mail apps do not always use the signature set on a computer. Depending on your email system, the signature may be applied server-side or added manually in the app: prepare a short version for these cases.
Test before deploying
- Send a test email to an iPhone and an Android device.
- Check dark mode.
- Check the display of the banner and icons.
