text-indent
CSS property · 13 supported, 8 partial, 0 unsupported across 21 clients
text-indent splits the field: 13 full, 8 partial of 21 clients as of Sep 2, 2026, the partials (Gmail, Gmail Android, Gmail iOS) are where sends go wrong.
- 3/7 webmail, 6/6 desktop, 4/8 mobile clients support text-indent fully.
- Partial in Gmail, Gmail Android, Gmail iOS, Yahoo Mail and 4 more, behavior differs from browsers, test before relying on it.
- 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 Jan 31, 2021, synced by Emailens Sep 2, 2026.
Client Support
| Client | Category | Engine | Support |
|---|---|---|---|
| Gmail | webmail | Gmail Web | PartialSee caveat 1 |
| 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 | Supported |
| Outlook Classic | desktop | Microsoft Word | Supported |
| 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 | PartialSee caveat 1 |
| Yahoo Mail Android | mobile | Yahoo | PartialSee caveat 1 |
| Yahoo Mail iOS | mobile | Yahoo | PartialSee caveat 1 |
| Samsung Mail | mobile | Samsung | Supported |
| Thunderbird | desktop | Gecko | Supported |
| HEY Mail | webmail | WebKit | Supported |
| Proton Mail | webmail | Proton | PartialSee caveat 2 |
| AOL Mail | webmail | AOL | PartialSee caveat 1 |
| Fastmail | webmail | Fastmail | Supported |
| Superhuman | desktop | Blink | Supported |
Documented caveats (2)
- 1.Gmail, Gmail Android, Gmail iOS, Yahoo Mail, Yahoo Mail Android, Yahoo Mail iOS, AOL Mail: Partial. Negative values are not supported.
- 2.Proton Mail: Partial. Hard-coded negative values are not supported, but negative values as a result of the
calc()function are supported.
Caveats recorded by caniemail.com (MIT) and carried verbatim, one entry per wording rather than per client.
Client-by-client behaviour for text-indent
Fully supports text-indent (13): Outlook 365, Outlook (New), Outlook Classic, Outlook iOS, Outlook Android, Outlook for Mac, Apple Mail, Apple Mail iOS, Samsung Mail, Thunderbird, HEY Mail, Fastmail, Superhuman.
Partial support (8): Gmail, Gmail Android, Gmail iOS, Yahoo Mail, Yahoo Mail Android, Yahoo Mail iOS, Proton Mail, AOL Mail. Expect rendering quirks unique to each engine. Partial support typically means a subset of values, an ignored shorthand, or sanitizer-specific rewrites.
Fixes & Workarounds
Gmail
Partial"text-indent" is not supported in this email client.
Gmail Android
Partial"text-indent" is not supported in this email client.
Gmail iOS
Partial"text-indent" is not supported in this email client.
Yahoo Mail
Partial"text-indent" is not supported in this email client.
Yahoo Mail Android
Partial"text-indent" is not supported in this email client.
Yahoo Mail iOS
Partial"text-indent" is not supported in this email client.
Proton Mail
Partial"text-indent" is not supported in this email client.
AOL Mail
Partial"text-indent" is not supported in this email client.
Related Features
Check your own HTML for text-indent
Paste your own, or run the sample below. Analyzed in this page, with no signup and nothing stored.
Test your text-indent layout across 21 email clients
Preview rendering, catch CSS issues, and see how text-indent 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 Jan 31, 2021 as the last time text-indent was tested in a real client, 5 years before this sync. Syncing copies that result forward, it does not re-test it. Carried in @emailens/engine data v0.12.2.