← CSS Support IndexDoes CSS
Does CSS overflow-wrap Work in HTML Email?
Allows long words or URLs to be broken and wrapped onto the next line to prevent overflow.
Quick Answer
Does overflow-wrap work in HTML email?
The CSS overflow-wrap property is supported in Outlook (Mac / Web), Samsung Email. It is NOT supported in Gmail, Outlook (Windows), Yahoo! Mail. Always include a safe fallback for unsupported clients.
Which Email Clients Support CSS overflow-wrap?
CSS support for overflow-wrap across email clients
| Email Client | Desktop | Mobile / Web | Notes |
|---|---|---|---|
| Gmail | ✗ No | ✗ No | — |
| Outlook (Windows) | ✗ No | ? | — |
| Outlook (Mac / Web) | ✓ Yes | ✗ No | — |
| Apple Mail | ~ Partial | ~ Partial | — |
| Yahoo! Mail | ✗ No | ✗ No | — |
| Samsung Email | ? | ✓ Yes | — |
| Thunderbird | ? | ? | — |
| ProtonMail | ? | ? | — |
| Fastmail | ? | ? | — |
Notes
- #1 Buggy. Requires `word-break:normal` to reset Apple Mail default style
Frequently Asked Questions
Related CSS Properties
Test Your Email Now
Paste your HTML and see how it renders in clients that don't support overflow-wrap.
Building a new email instead of checking an existing one? MailViewr's Email Builder only lets you use CSS that's known to render across clients, so overflow-wrap can't sneak into your markup by accident. Open the Email Builder →