max-width in Outlook Classic
Partial max-width is partly supported in Outlook Classic.
Only works on <table> elements.
Works in 20 of 21 · partial in 1
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, Proton Mail, AOL Mail, Fastmail, Superhuman
- Partial
- Outlook Classic
Your reader in Outlook Classic may not see max-width the way you wrote it, even if it looks right where you tested it.
The fix for Outlook Classic
Use a fixed-width table wrapper for Outlook
<!--[if mso]>
<table role="presentation" width="600" cellpadding="0"
cellspacing="0" border="0" align="center"><tr><td>
<![endif]-->
<div style="max-width: 600px; margin: 0 auto;">
Content here
</div>
<!--[if mso]>
</td></tr></table>
<![endif]-->Show the original
<div style="max-width: 600px; margin: 0 auto;">
Content here
</div>The checker needs a computer screen.
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What Outlook Classic does with max-width
The Emailens probe for max-width on 3 real installs counted as Outlook Classic, captured 14 Oct 2026. It shows the problem, not the fix. Where max-width is supported it shows: bar stops at 200px.
caniemail: max-width is partly supported in Outlook Classic.
- Outlook 2019 (Windows) · counted as Outlook Classic Real screenshot
- Outlook 2016 (Windows) · counted as Outlook Classic Real screenshot
- Outlook 2007 (Windows) · counted as Outlook Classic Real screenshot
Partial. Only works on <table> elements.
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 →
@emailens/engine 0.18.22 on the original code
Outlook Classic only honours max-width on a table. Wrap the element in a table with a fixed width.
caniemail record, tested upstream 2 Aug 2019
- Partial. Only works on
<table>elements.
Your next question
- Does word-break work in Outlook Classic?
Works in 4 of 21 · partial in 12 · not supported in 5
fix - Does display:flex work in Outlook Classic?
Works in 18 of 21 · partial in 2 · not supported in 1
fix - Does display:grid work in Outlook Classic?
Works in 18 of 21 · partial in 2 · not supported in 1
fix - Does border-spacing work in Outlook Classic?
Works in 17 of 21 · not supported in 2 · 2 untested
fix - Does border-radius work in Outlook Classic?
Works in 16 of 21 · partial in 4 · not supported in 1
fix - Does visibility work in Outlook Classic?
Works in 13 of 21 · not supported in 8
fix
Every feature in Outlook Classic · max-width in every client
Questions
- How many email clients support max-width?
- It works in 20 of 21, partial in 1.
- What do I use instead of max-width in Outlook Classic?
- Use a fixed-width table wrapper for Outlook.
- Does max-width work in AOL Mail?
- max-width works in AOL Mail. Closest to Outlook Classic: AOL Mail, which agrees on 206 of the 298 features both are tested on.
To see what else in your email Outlook Classic does not support, paste the whole email.
No signup · Five clients free, Outlook Classic included · All 21 with an account
The checker needs a computer screen.
Real captures 14 Oct 2026 on 10 installs · caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 2 Aug 2019 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping