linear-gradient in Proton Mail
Works linear-gradient works in Proton Mail.
Works in 9 of 21 · partial in 2 · not supported in 10
Which clients
- Works
- Gmail, Gmail iOS, Apple Mail, Apple Mail iOS, Thunderbird, HEY Mail, Proton Mail, Fastmail, Superhuman
- Partial
- Gmail Android, Samsung Mail
- Not supported
- Outlook 365, Outlook (New), Outlook Classic, Outlook iOS, Outlook Android, Outlook for Mac, Yahoo Mail, Yahoo Mail Android, Yahoo Mail iOS, AOL Mail
The fix for the clients that need it
Needed in 12 of 21: Outlook 365, Outlook (New), Outlook Classic and 9 more.
Add solid color fallback for gradient backgrounds
<td style="background-color: #667eea;
background-image: linear-gradient(135deg, #667eea, #764ba2);
padding: 40px; color: #fff;">
Content here
</td>Show the original
<td style="background: linear-gradient(135deg, #667eea, #764ba2);
padding: 40px; color: #fff;">
Content here
</td>A free account opens all 21 clients and keeps your checks for 7 days. Create a free account →
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advice
Every feature in Proton Mail · linear-gradient in every client
Questions
- How many email clients support linear-gradient?
- It works in 9 of 21, partial in 2, not supported in 10.
- Does linear-gradient work in Apple Mail?
- linear-gradient works in Apple Mail. Closest to Proton Mail: Apple Mail, which agrees on 203 of the 300 features both are tested on.
To see what in your email Proton Mail does not support, paste the whole email.
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Real captures 14 Oct 2026 on 10 installs · caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 29 Dec 2021 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping