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Does CSS hyphens Work in HTML Email?
Controls whether words should be hyphenated when text wraps across lines.
Quick Answer
Does hyphens work in HTML email?
The CSS hyphens property is supported in Outlook (Mac / Web), Apple Mail, 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 hyphens?
CSS support for hyphens across email clients
| Email Client | Desktop | Mobile / Web | Notes |
|---|---|---|---|
| Gmail | ✗ No | ✗ No | — |
| Outlook (Windows) | ✗ No | ? | — |
| Outlook (Mac / Web) | ✓ Yes | ✗ No | — |
| Apple Mail | ✓ Yes | ✓ Yes | — |
| Yahoo! Mail | ✗ No | ✗ No | — |
| Samsung Email | ? | ✓ Yes | — |
| Thunderbird | ? | ? | — |
| ProtonMail | ? | ? | — |
| Fastmail | ? | ? | — |
Frequently Asked Questions
Test Your Email Now
Paste your HTML and see how it renders in clients that don't support hyphens.