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box-shadow in Apple Mail

Works box-shadow works in Apple Mail.

Works in 14 of 21 · partial in 2 · not supported in 5

Which clients
Works
Outlook 365, Outlook (New), Outlook iOS, Outlook Android, Outlook for Mac, Apple Mail, Apple Mail iOS, Yahoo Mail, Samsung Mail, Thunderbird, HEY Mail, Proton Mail, Fastmail, Superhuman
Partial
Gmail Android, Gmail iOS
Not supported
Gmail, Outlook Classic, Yahoo Mail Android, Yahoo Mail iOS, AOL Mail

The fix for the clients that need it

Needed in 7 of 21: Gmail, Outlook Classic, Yahoo Mail Android and 4 more.

Use border as a fallback for box-shadow

instead
.card {
  border: 1px solid #e0e0e0;
  /* box-shadow as progressive enhancement */
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}
Show the original
before
.card {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

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What Apple Mail does with box-shadow

The Emailens probe for box-shadow on a real install counted as Apple Mail, captured 14 Oct 2026. It shows the probe, not the fix. Where box-shadow is supported it shows: box with a red shadow.

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Your next question

Every feature in Apple Mail · box-shadow in every client

Questions

How many email clients support box-shadow?
It works in 14 of 21, partial in 2, not supported in 5.
Does box-shadow work in Apple Mail iOS?
box-shadow works in Apple Mail iOS. Closest to Apple Mail: Apple Mail iOS, which agrees on 284 of the 298 features both are tested on.

To see what in your email Apple Mail does not support, paste the whole email.

The checker needs a computer screen.

Real captures 14 Oct 2026 on 11 installs · caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 20 Dec 2023 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping