How many email clients support @font-face?

It works in 6 of 21, not supported in 15.

Does @font-face work in Apple Mail iOS?

@font-face works in Apple Mail iOS. Closest to Apple Mail: Apple Mail iOS, which agrees on 284 of the 298 features both are tested on.

@font-face in Apple Mail

Works @font-face works in Apple Mail.

Works in 6 of 21 · not supported in 15

Which clients

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

The fix for the clients that need it

Needed in 15 of 21: Gmail, Gmail Android, Gmail iOS and 12 more.

Add web-safe font fallback stack

instead

8 lines

/* Keep @font-face for clients that support it */
@font-face {
  font-family: 'CustomFont';
  src: url('custom.woff2') format('woff2');
}
h1 {
  font-family: 'CustomFont', Arial, Helvetica, sans-serif;
}

Show the original

before

5 lines

@font-face {
  font-family: 'CustomFont';
  src: url('custom.woff2') format('woff2');
}
h1 { font-family: 'CustomFont'; }

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Your next question

Every feature in Apple Mail · @font-face in every client

Questions

How many email clients support @font-face?: It works in 6 of 21, not supported in 15.
Does @font-face work in Apple Mail iOS?: @font-face works in Apple Mail iOS. Closest to Apple Mail: Apple Mail iOS, which agrees on 284 of the 298 features both are tested on.

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