word-break in Outlook 365
Partial word-break is partly supported in Outlook 365.
Buggy.
Works in 4 of 21 · partial in 12 · not supported in 5
Which clients
- Works
- Gmail, Thunderbird, Fastmail, Superhuman
- Partial
- Gmail Android, Gmail iOS, Outlook 365, Outlook (New), Outlook iOS, Outlook Android, Outlook for Mac, Apple Mail, Apple Mail iOS, Samsung Mail, HEY Mail, Proton Mail
- Not supported
- Outlook Classic, Yahoo Mail, Yahoo Mail Android, Yahoo Mail iOS, AOL Mail
Your reader in Outlook 365 may not see word-break the way you wrote it, even if it looks right where you tested it.
What to do instead in Outlook 365
Outlook Windows does not wrap a URL on word-break, word-wrap, or overflow-wrap. Insert ​ in a cell that has a width
<table role="presentation" width="100%" cellpadding="0"
cellspacing="0" border="0">
<tr>
<td width="100%">
https://example.com/​very/​long/​url?token=​abc123def456
</td>
</tr>
</table>Show the original
<span style="word-break: break-all;">
https://example.com/very/long/url?token=abc123def456
</span>A free account opens all 21 clients and keeps your checks for 7 days. Create a free account →
What Outlook 365 does with word-break
The Emailens probe for word-break on a real install counted as Outlook 365, captured 14 Oct 2026. It shows the problem, not the fix. Where word-break is supported it shows: long word wraps inside the box.
caniemail: word-break is partly supported in Outlook 365.
This Outlook.com install drops the <style> in the head, so only inline styles apply.
Buggy. Supported but a word-wrap:break-word is applied, making it look like break-all.
caniemail record, tested upstream 15 Feb 2022
- Buggy. Supported but a
word-wrap:break-wordis applied, making it look likebreak-all.
Your next question
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Works in 5 of 21 · partial in 1 · not supported in 15
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Works in 7 of 21 · partial in 1 · not supported in 13
fix - Does overflow-wrap work in Outlook 365?
Works in 2 of 21 · partial in 3 · not supported in 13 · 3 untested
fix - Does bimi work in Outlook 365?
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- Does clip-path work in Outlook 365?
Works in 8 of 21 · not supported in 13
- Does block-size work in Outlook 365?
Works in 7 of 21 · not supported in 13 · 1 untested
Questions
- How many email clients support word-break?
- It works in 4 of 21, partial in 12, not supported in 5.
- What do I use instead of word-break in Outlook 365?
- Outlook Windows does not wrap a URL on word-break, word-wrap, or overflow-wrap. Insert ​ in a cell that has a width.
- Does word-break work in Outlook (New)?
- word-break is partly supported in Outlook (New). Outlook 365 and Outlook (New) differ on 1 feature: text-shadow.
To see what else in your email Outlook 365 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 15 Feb 2022 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping