empty-cells
CSS property · 14 supported, 0 partial, 4 unsupported across 21 clients
Client Support
| Client | Category | Engine | Support |
|---|---|---|---|
| Gmail | webmail | Gmail Web | Supported |
| Gmail Android | mobile | Gmail Mobile | Supported |
| Gmail iOS | mobile | Gmail Mobile | Supported |
| Outlook 365 | webmail | Outlook Web | Supported |
| Outlook (New) | desktop | Outlook Web | Unsupported |
| Outlook Classic | desktop | Microsoft Word | Unsupported |
| Outlook iOS | mobile | Outlook Mobile | Supported |
| Outlook Android | mobile | Outlook Mobile | Supported |
| Outlook for Mac | desktop | WebKit | Supported |
| Apple Mail | desktop | WebKit | Supported |
| Apple Mail iOS | mobile | WebKit | Supported |
| Yahoo Mail | webmail | Yahoo | Supported |
| Yahoo Mail Android | mobile | Yahoo | Unsupported |
| Yahoo Mail iOS | mobile | Yahoo | Unsupported |
| Samsung Mail | mobile | Samsung | Supported |
| Thunderbird | desktop | Gecko | Unknown |
| HEY Mail | webmail | WebKit | Unknown |
| Proton Mail | webmail | Proton | Supported |
| AOL Mail | webmail | AOL | Supported |
| Fastmail | webmail | Fastmail | Unknown |
| Superhuman | desktop | Blink | Supported |
Client-by-client behaviour for empty-cells
Fully supports empty-cells (14): Gmail, Gmail Android, Gmail iOS, Outlook 365, Outlook iOS, Outlook Android, Outlook for Mac, Apple Mail, Apple Mail iOS, Yahoo Mail, Samsung Mail, Proton Mail, AOL Mail, Superhuman.
No support (4): Outlook (New), Outlook Classic, Yahoo Mail Android, Yahoo Mail iOS. Plan fallbacks for these clients before relying on empty-cells in production sends.
Behaviour unverified in: Thunderbird, HEY Mail, Fastmail.
Fixes & Workarounds
Outlook (New)
Unsupported"empty-cells" is not supported in this email client.
Outlook Classic
Unsupported"empty-cells" is not supported in this email client.
Yahoo Mail Android
Unsupported"empty-cells" is not supported in this email client.
Yahoo Mail iOS
Unsupported"empty-cells" is not supported in this email client.
Related Features
Test your email across all 21 clients
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Try Emailens FreeSupport data last updated Apr 27, 2026 · synced from caniemail.com via @emailens/engine.