Substack publication header on Email client (Apple Mail)
Substack publication header header on Email client (Apple Mail) — what gets cut off
Substack publication header renders your 1100×400px header at 800×291px on Email client (Apple Mail). Here's what gets clipped and how to design around it.
Source size
1100 × 400px
Display size on Email client (Apple Mail)
800 × 291px
Device type
Desktop
Safe areas on Email client (Apple Mail)
Anything inside one of these zones is hidden by Email client (Apple Mail) UI.
No active safe areas defined yet for this device. Run a Better Header audit to detect any platform-introduced overlays.
Design tips for Substack publication header on Email client (Apple Mail)
- •Anchor to the center. Substack publication header crops differently on Email client (Apple Mail) than on desktop — centering keeps your headline, logo, or CTA visible everywhere.
- •Avoid the chrome. Status bar, Dynamic Island, and profile-picture overlays are fixed positions on Email client (Apple Mail) — design around them, not under them.
- •Export at 2×. Save at 2200×800px so the image looks crisp on retina Email client (Apple Mail) screens.
- •Audit before posting. A 90-second Better Header audit shows you exactly what gets cut off on Email client (Apple Mail) and every other supported device.
See exactly what Email client (Apple Mail) hides on your header
Run a paid audit and Better Header renders your design on Email client (Apple Mail) and 3 other device profiles, with pixel-precise fix coordinates.
Refund if no device issues are found.