Does overflow-wrap work in Apple Mail?

overflow-wrap is partly supported in Apple Mail. Closest to Apple Mail iOS: Apple Mail, which agrees on 284 of the 298 features both are tested on.

overflow-wrap in Apple Mail iOS

Partial overflow-wrap is partly supported in Apple Mail iOS.

Buggy.

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 Apple Mail iOS may not see overflow-wrap the way you wrote it, even if it looks right where you tested it.

What to do instead in Apple Mail iOS

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

instead

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 Apple Mail iOS does with overflow-wrap

caniemail record, tested upstream 3 Aug 2022

Buggy. Requires word-break:normal to reset Apple Mail default style (See issue#394.)

Your next question

Every feature in Apple Mail iOS · 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 Apple Mail iOS?: 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 Apple Mail?: overflow-wrap is partly supported in Apple Mail. Closest to Apple Mail iOS: Apple Mail, which agrees on 284 of the 298 features both are tested on.

To see what else in your email Apple Mail iOS 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