CSS property · 11 real installs 14 Oct 2026 · data last changed 10 Nov 2026
min-width in email clients
Works in 20 of 21. Not supported in Outlook Classic.
Your reader in Outlook Classic sees the email without min-width, 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 width instead of min-width for Outlook compatibility
<!-- Outlook ignores min-width. Use a fixed width or a spacer. -->
<td width="200" style="width: 200px;">Content</td>Show the original
<td style="min-width: 200px;">Content</td>No signup · Five clients free, Outlook Classic included · All 21 with an account
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min-width on 11 real installs
One Emailens probe, screenshotted on each install on 14 October 2026, next to our live preview of the same client. Where min-width is supported you should see: bar is at least 300px.
caniemail: min-width is not supported in Outlook Classic.
caniemail: min-width works in Outlook 365.
This Outlook.com install drops the <style> in the head, so only inline styles apply.
caniemail: min-width works in Apple Mail.
caniemail: min-width works in Apple Mail iOS.
caniemail: min-width works in Yahoo Mail.
Also captured, not counted as evidence (4)
- Outlook for Microsoft 365 · not mapped to an engine client yet Real screenshot
- Outlook 2019 for Mac (legacy app) · not counted as Outlook for Mac Real screenshot
This is the legacy Outlook for Mac app. The new Outlook for Mac, which the table describes, drops gradients, grid sizing functions, var() and more.
- Gmail (web) · not counted as Gmail Real screenshot
This Gmail install does not apply Gmail's sanitiser, so it shows more than real Gmail does.
- Windows Mail · not mapped to an engine client yet Real screenshot
Every account includes one free real-device check in classic Outlook, Outlook for Mac and Apple Mail, after you verify your email and run one preview, while this month's free capacity lasts. How real-device checks work →
All 21 clients, problems first
| Client | Support |
|---|---|
| Outlook Classic | Not supported |
Works in 20: Gmail, Gmail Android, Gmail iOS and 17 more. Show all
| Client | Support |
|---|---|
| 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 |
| Proton Mail | Works |
| AOL Mail | Works |
| Fastmail | Works |
| Superhuman | Works |
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fix
min-width in Outlook Classic · Every feature in Outlook Classic · All email CSS features · What real installs show
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