<body>
HTML element · 5 supported, 9 partial, 6 unsupported across 21 clients
As of Oct 14, 2026, <body> fails or degrades in 16 of 21 email clients, treat it as progressive enhancement, never structure.
- 0/7 webmail, 3/6 desktop, 2/8 mobile clients support <body> fully.
- Unsupported in Outlook for Mac, Yahoo Mail Android, Yahoo Mail iOS, Proton Mail and 2 more.
- Partial in Gmail, Gmail Android, Gmail iOS, Outlook 365 and 5 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 Nov 30, 2021, synced by Emailens Oct 14, 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 | PartialSee caveat 1 |
| Outlook (New) | desktop | Outlook Web | PartialSee caveat 1 |
| Outlook Classic | desktop | Microsoft Word | Supported |
| Outlook iOS | mobile | Outlook Mobile | PartialSee caveat 1 |
| Outlook Android | mobile | Outlook Mobile | PartialSee caveat 1 |
| Outlook for Mac | desktop | WebKit | Unsupported |
| Apple Mail | desktop | WebKit | Supported |
| Apple Mail iOS | mobile | WebKit | Supported |
| Yahoo Mail | webmail | Yahoo | PartialSee caveat 1 |
| Yahoo Mail Android | mobile | Yahoo | Unsupported |
| Yahoo Mail iOS | mobile | Yahoo | Unsupported |
| Samsung Mail | mobile | Samsung | Supported |
| Thunderbird | desktop | Gecko | Supported |
| HEY Mail | webmail | WebKit | PartialSee caveat 1 |
| Proton Mail | webmail | Proton | Unsupported |
| AOL Mail | webmail | AOL | Unsupported |
| Fastmail | webmail | Fastmail | Unsupported |
| Superhuman | desktop | Blink | Unknown |
Documented caveats (1)
- 1.Gmail, Gmail Android, Gmail iOS, Outlook 365, Outlook (New), Outlook iOS, Outlook Android, Yahoo Mail, HEY Mail: Partial. Replaced by a
<div>with supported attributes.
Caveats recorded by caniemail.com (MIT) and carried verbatim, one entry per wording rather than per client.
Client-by-client behaviour for <body>
Fully supports <body> (5): Outlook Classic, Apple Mail, Apple Mail iOS, Samsung Mail, Thunderbird.
Partial support (9): Gmail, Gmail Android, Gmail iOS, Outlook 365, Outlook (New), Outlook iOS, Outlook Android, Yahoo Mail, HEY Mail. Expect rendering quirks unique to each engine. Partial support typically means a subset of values, an ignored shorthand, or sanitizer-specific rewrites.
No support (6): Outlook for Mac, Yahoo Mail Android, Yahoo Mail iOS, Proton Mail, AOL Mail, Fastmail. Plan fallbacks for these clients before relying on <body> in production sends.
Behaviour unverified in: Superhuman.
Fixes & Workarounds
Outlook for Mac
Unsupported`<body>` is not supported in this email client.
Yahoo Mail Android
Unsupported`<body>` is not supported in this email client.
Yahoo Mail iOS
Unsupported`<body>` is not supported in this email client.
Proton Mail
Unsupported`<body>` is not supported in this email client.
AOL Mail
Unsupported`<body>` is not supported in this email client.
Fastmail
Unsupported`<body>` is not supported in this email client.
Gmail
Partial`<body>` is not supported in this email client.
Gmail Android
Partial`<body>` is not supported in this email client.
Gmail iOS
Partial`<body>` is not supported in this email client.
Outlook 365
Partial`<body>` is not supported in this email client.
Outlook (New)
Partial`<body>` is not supported in this email client.
Outlook iOS
Partial`<body>` is not supported in this email client.
Outlook Android
Partial`<body>` is not supported in this email client.
Yahoo Mail
Partial`<body>` is not supported in this email client.
HEY Mail
Partial`<body>` is not supported in this email client.
Related Features
Check your own HTML for <body>
Paste your own, or run the sample below. Analyzed in this page, with no signup and nothing stored.
Test your <body> layout across 21 email clients
Preview rendering, catch CSS issues, and see how <body> 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 Nov 30, 2021 as the last time <body> was tested in a real client, 4 years before this sync. Syncing copies that result forward, it does not re-test it. Carried in @emailens/engine data v0.14.5.