← CSS Support IndexDoes CSS
Does CSS text-orientation Work in HTML Email?
Sets the orientation of the text characters in vertical mode.
Quick Answer
Does text-orientation work in HTML email?
The CSS text-orientation property is supported in Gmail, Outlook (Mac / Web), Apple Mail, Samsung Email, and others. It is NOT supported in Outlook (Windows), Yahoo! Mail. Always include a safe fallback for unsupported clients.
Which Email Clients Support CSS text-orientation?
CSS support for text-orientation across email clients
| Email Client | Desktop | Mobile / Web | Notes |
|---|---|---|---|
| Gmail | ✓ Yes | ✓ Yes | — |
| Outlook (Windows) | ✗ No | ? | — |
| Outlook (Mac / Web) | ✓ Yes | ✓ Yes | — |
| Apple Mail | ✓ Yes | ✓ Yes | — |
| Yahoo! Mail | ✗ No | ✗ No | — |
| Samsung Email | ? | ✓ Yes | — |
| Thunderbird | ✓ Yes | ? | — |
| ProtonMail | ✓ Yes | ✓ Yes | — |
| Fastmail | ? | ? | — |
Notes
- #1 Partial. `sideways` is not supported
Frequently Asked Questions
Test Your Email Now
Paste your HTML and see how it renders in clients that don't support text-orientation.