text-overflow
CSS property · 12 supported, 2 partial, 7 unsupported across 21 clients
12 of 21 email clients render text-overflow fully (Sep 2, 2026 data); it breaks outright in Outlook (New), Outlook Classic, Yahoo Mail and 4 more.
- 5/7 webmail, 4/6 desktop, 3/8 mobile clients support text-overflow fully.
- Unsupported in Outlook (New), Outlook Classic, Yahoo Mail, Yahoo Mail Android and 3 more.
- Partial in Gmail Android, Gmail iOS, behavior differs from browsers, test before relying on it.
- Outlook Classic (Word engine, supported to at least 2029) does not fully support text-overflow, and its replacement changes little here; see the deprecation diff.
- Across all clients, only 6 of 298 tracked HTML/CSS features render identically everywhere.
Source: caniemail.com (MIT), via the Emailens engine. Last tested upstream Feb 28, 2019, synced by Emailens Sep 2, 2026.
Client Support
| Client | Category | Engine | Support |
|---|---|---|---|
| Gmail | webmail | Gmail Web | Supported |
| Gmail Android | mobile | Gmail Mobile | PartialSee caveat 1 |
| Gmail iOS | mobile | Gmail Mobile | PartialSee caveat 1 |
| 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 | Unsupported |
| Yahoo Mail Android | mobile | Yahoo | Unsupported |
| Yahoo Mail iOS | mobile | Yahoo | Unsupported |
| Samsung Mail | mobile | Samsung | Unsupported |
| Thunderbird | desktop | Gecko | Supported |
| HEY Mail | webmail | WebKit | Supported |
| Proton Mail | webmail | Proton | Supported |
| AOL Mail | webmail | AOL | Unsupported |
| Fastmail | webmail | Fastmail | Supported |
| Superhuman | desktop | Blink | Supported |
Documented caveats (1)
- 1.Gmail Android, Gmail iOS: Partial. Not supported with non Google accounts.
Caveats recorded by caniemail.com (MIT) and carried verbatim, one entry per wording rather than per client.
Client-by-client behaviour for text-overflow
Fully supports text-overflow (12): Gmail, Outlook 365, Outlook iOS, Outlook Android, Outlook for Mac, Apple Mail, Apple Mail iOS, Thunderbird, HEY Mail, Proton Mail, Fastmail, Superhuman.
Partial support (2): Gmail Android, Gmail iOS. Expect rendering quirks unique to each engine. Partial support typically means a subset of values, an ignored shorthand, or sanitizer-specific rewrites.
No support (7): Outlook (New), Outlook Classic, Yahoo Mail, Yahoo Mail Android, Yahoo Mail iOS, Samsung Mail, AOL Mail. Plan fallbacks for these clients before relying on text-overflow in production sends.
Fixes & Workarounds
Outlook (New)
Unsupportedtext-overflow requires overflow:hidden which is stripped by Gmail. Truncate content server-side.
Outlook Classic
Unsupportedtext-overflow requires overflow:hidden which is stripped by Gmail. Truncate content server-side.
Yahoo Mail
Unsupportedtext-overflow requires overflow:hidden which is stripped by Gmail. Truncate content server-side.
Yahoo Mail Android
Unsupportedtext-overflow requires overflow:hidden which is stripped by Gmail. Truncate content server-side.
Yahoo Mail iOS
Unsupportedtext-overflow requires overflow:hidden which is stripped by Gmail. Truncate content server-side.
Samsung Mail
Unsupportedtext-overflow requires overflow:hidden which is stripped by Gmail. Truncate content server-side.
AOL Mail
Unsupportedtext-overflow requires overflow:hidden which is stripped by Gmail. Truncate content server-side.
Gmail Android
Partialtext-overflow requires overflow:hidden which is stripped by Gmail. Truncate content server-side.
Gmail iOS
Partialtext-overflow requires overflow:hidden which is stripped by Gmail. Truncate content server-side.
Related Features
Check your own HTML for text-overflow
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Test your text-overflow layout across 21 email clients
Preview rendering, catch CSS issues, and see how text-overflow displays across Outlook, Gmail, and Apple Mail. Free, no account needed.
Instant live preview · No signup required · 21 email engines
Last tested upstream: · Last synced by Emailens:
caniemail.com (MIT) records Feb 28, 2019 as the last time text-overflow was tested in a real client, 7 years before this sync. Syncing copies that result forward, it does not re-test it. Carried in @emailens/engine data v0.12.2.