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 Outlook (New)?

linear-gradient is not supported in Outlook (New). Closest to Outlook for Mac: Outlook (New), which agrees on 279 of the 299 features both are tested on.

linear-gradient in Outlook for Mac

Not supported linear-gradient is not supported in Outlook for Mac.

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

Your reader in Outlook for Mac sees the email without linear-gradient, even if it looks right where you tested it.

What to do instead in Outlook for Mac

Add solid color fallback for gradient backgrounds

instead

5 lines

<td style="background-color: #667eea;
            background-image: linear-gradient(135deg, #667eea, #764ba2);
            padding: 40px; color: #fff;">
  Content here
</td>

Show the original

before

4 lines

<td style="background: linear-gradient(135deg, #667eea, #764ba2);
            padding: 40px; color: #fff;">
  Content here
</td>

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Your next question

Every feature in Outlook for Mac · 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.
What do I use instead of linear-gradient in Outlook for Mac?: Add solid color fallback for gradient backgrounds.
Does linear-gradient work in Outlook (New)?: linear-gradient is not supported in Outlook (New). Closest to Outlook for Mac: Outlook (New), which agrees on 279 of the 299 features both are tested on.

To see what else in your email Outlook for Mac 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