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CSS property · data last changed 10 Nov 2026

min-height in email clients

Works in 19 of 21. Not supported in Outlook Classic and Proton Mail.

Your reader in Outlook Classic sees the email without min-height, even if it looks right where you tested it.

caniemail (MIT) via @emailens/engine 0.18.22

What to do instead in Outlook Classic

Use a fixed height or spacer instead of min-height

instead
<!-- Outlook ignores min-height. Use height or a spacer image. -->
<td height="100" style="height: 100px;">Content</td>
Show the original
before
<td style="min-height: 100px;">Content</td>

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min-height is not among the 24 features we have screenshotted on real installs. The ones we have →

All 21 clients, problems first

ClientSupport
Outlook Classic Not supported
Proton Mail Not supported
Works in 19: Gmail, Gmail Android, Gmail iOS and 16 more. Show all
ClientSupport
Gmail Works
Gmail Android Works
Gmail iOS Works
Outlook 365 Works
Outlook (New) Works
Outlook iOS Works
Outlook Android Works
Outlook for Mac Works
Apple Mail Works
Apple Mail iOS Works
Yahoo Mail Works
Yahoo Mail Android Works
Yahoo Mail iOS Works
Samsung Mail Works
Thunderbird Works
HEY Mail Works
AOL Mail Works
Fastmail Works
Superhuman Works

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min-height in Outlook Classic · Every feature in Outlook Classic · All email CSS features · What real installs show

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caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 29 Nov 2021 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping