@font-face in Yahoo Mail iOS
Not supported @font-face is not supported in Yahoo Mail iOS.
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
Your reader in Yahoo Mail iOS sees the email without @font-face, even if it looks right where you tested it.
What to do instead in Yahoo Mail iOS
Add web-safe font fallback stack
/* 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
@font-face {
font-family: 'CustomFont';
src: url('custom.woff2') format('woff2');
}
h1 { font-family: 'CustomFont'; }A free account opens all 21 clients and keeps your checks for 7 days. Create a free account →
What Yahoo Mail iOS does with @font-face
@emailens/engine 0.18.22 on the original code
Yahoo Mail iOS does not support "@font-face".
Your next question
- Does @media orientation work in Yahoo Mail iOS?
Works in 11 of 21 · partial in 1 · not supported in 8 · 1 untested
- Does @media device-pixel-ratio work in Yahoo Mail iOS?
Works in 10 of 21 · not supported in 10 · 1 untested
- Does @media hover work in Yahoo Mail iOS?
Works in 9 of 21 · not supported in 8 · 4 untested
- Does @media prefers-color-scheme work in Yahoo Mail iOS?
Works in 9 of 21 · not supported in 11 · 1 untested
- Does @media prefers-reduced-motion work in Yahoo Mail iOS?
Works in 9 of 21 · partial in 1 · not supported in 10 · 1 untested
- Does @keyframes work in Yahoo Mail iOS?
Works in 7 of 21 · partial in 1 · not supported in 13
Every feature in Yahoo Mail iOS · @font-face in every client
Questions
- How many email clients support @font-face?
- It works in 6 of 21, not supported in 15.
- What do I use instead of @font-face in Yahoo Mail iOS?
- Add web-safe font fallback stack.
- Does @font-face work in Yahoo Mail Android?
- @font-face is not supported in Yahoo Mail Android. Closest to Yahoo Mail iOS: Yahoo Mail Android, which agrees on 284 of the 297 features both are tested on.
To see what else in your email Yahoo Mail iOS does not support, paste the whole email.
No signup · Five clients free, Outlook Classic included · All 21 with an account
The checker needs a computer screen.
caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 19 Dec 2023 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping