Does overflow-wrap work in Yahoo Mail iOS?

overflow-wrap is not supported in Yahoo Mail iOS. Closest to Yahoo Mail: Yahoo Mail iOS, which agrees on 282 of the 298 features both are tested on.

overflow-wrap in Yahoo Mail

Not supported overflow-wrap is not supported in Yahoo Mail.

Works in 2 of 21 · partial in 3 · not supported in 13 · 3 untested

Which clients

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

Your reader in Yahoo Mail sees the email without overflow-wrap, even if it looks right where you tested it.

The fix for Yahoo Mail

Outlook Windows does not wrap a URL on word-break, word-wrap, or overflow-wrap. Insert  in a cell that has a width

after

8 lines

<table role="presentation" width="100%" cellpadding="0"
  cellspacing="0" border="0">
  <tr>
    <td width="100%">
      https://example.com/&#8203;very/&#8203;long/&#8203;url?token=&#8203;abc123def456
    </td>
  </tr>
</table>

Show the original

before

3 lines

<p style="overflow-wrap: break-word;">
  https://example.com/very/long/url?token=abc123def456
</p>

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What Yahoo Mail does with overflow-wrap

@emailens/engine 0.18.22 on the original code

Yahoo Mail does not support "overflow-wrap".

Your next question

Every feature in Yahoo Mail · overflow-wrap in every client

Questions

How many email clients support overflow-wrap?: It works in 2 of 21, partial in 3, not supported in 13, 3 untested.
What do I use instead of overflow-wrap in Yahoo Mail?: Outlook Windows does not wrap a URL on word-break, word-wrap, or overflow-wrap. Insert  in a cell that has a width.
Does overflow-wrap work in Yahoo Mail iOS?: overflow-wrap is not supported in Yahoo Mail iOS. Closest to Yahoo Mail: Yahoo Mail iOS, which agrees on 282 of the 298 features both are tested on.

To see what else in your email Yahoo Mail does not support, paste the whole email.

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caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 3 Aug 2022 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping