How many email clients support min-height?

It works in 19 of 21, not supported in Outlook Classic and Proton Mail.

Does min-height work in Apple Mail iOS?

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

min-height in Apple Mail

Works min-height works in Apple Mail.

Works in 19 of 21 · not supported in 2

Which clients

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

The fix for the clients that need it

Needed in 2 of 21: Outlook Classic and Proton Mail.

Use a fixed height or spacer instead of min-height

instead

2 lines

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

Show the original

before

1 line

<td style="min-height: 100px;">Content</td>

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Your next question

Every feature in Apple Mail · min-height in every client

Questions

How many email clients support min-height?: It works in 19 of 21, not supported in Outlook Classic and Proton Mail.
Does min-height work in Apple Mail iOS?: min-height 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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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