<input type="submit">
HTML element · 12 supported, 1 partial, 7 unsupported across 21 clients
12 of 21 email clients render <input type="submit"> fully (Oct 14, 2026 data); it breaks outright in Outlook 365, Outlook (New), Outlook Classic and 4 more.
- 4/7 webmail, 2/6 desktop, 6/8 mobile clients support <input type="submit"> fully.
- Unsupported in Outlook 365, Outlook (New), Outlook Classic, Outlook for Mac and 3 more.
- Partial in Gmail iOS, behavior differs from browsers, test before relying on it.
- Outlook Classic (Word engine, supported to at least 2029) does not fully support <input type="submit">, 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 Sep 10, 2019, synced by Emailens Oct 14, 2026.
Client Support
| Client | Category | Engine | Support |
|---|---|---|---|
| Gmail | webmail | Gmail Web | Supported |
| Gmail Android | mobile | Gmail Mobile | Supported |
| Gmail iOS | mobile | Gmail Mobile | PartialSee caveat 1 |
| Outlook 365 | webmail | Outlook Web | Unsupported |
| 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 | Unsupported |
| Apple Mail | desktop | WebKit | Supported |
| Apple Mail iOS | mobile | WebKit | Supported |
| Yahoo Mail | webmail | Yahoo | Supported |
| Yahoo Mail Android | mobile | Yahoo | Supported |
| Yahoo Mail iOS | mobile | Yahoo | Unsupported |
| Samsung Mail | mobile | Samsung | Supported |
| Thunderbird | desktop | Gecko | Supported |
| HEY Mail | webmail | WebKit | Unsupported |
| Proton Mail | webmail | Proton | Unsupported |
| AOL Mail | webmail | AOL | Supported |
| Fastmail | webmail | Fastmail | Supported |
| Superhuman | desktop | Blink | Unknown |
Documented caveats (1)
- 1.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 <input type="submit">
Fully supports <input type="submit"> (12): Gmail, Gmail Android, Outlook iOS, Outlook Android, Apple Mail, Apple Mail iOS, Yahoo Mail, Yahoo Mail Android, Samsung Mail, Thunderbird, AOL Mail, Fastmail.
Partial support (1): 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 365, Outlook (New), Outlook Classic, Outlook for Mac, Yahoo Mail iOS, HEY Mail, Proton Mail. Plan fallbacks for these clients before relying on <input type="submit"> in production sends.
Behaviour unverified in: Superhuman.
Fixes & Workarounds
Outlook 365
Unsupported`<input type="submit">` is not supported in this email client.
Outlook (New)
Unsupported`<input type="submit">` is not supported in this email client.
Outlook Classic
Unsupported`<input type="submit">` is not supported in this email client.
Outlook for Mac
Unsupported`<input type="submit">` is not supported in this email client.
Yahoo Mail iOS
Unsupported`<input type="submit">` is not supported in this email client.
HEY Mail
Unsupported`<input type="submit">` is not supported in this email client.
Proton Mail
Unsupported`<input type="submit">` is not supported in this email client.
Gmail iOS
Partial`<input type="submit">` is not supported in this email client.
Related Features
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Last tested upstream: · Last synced by Emailens:
caniemail.com (MIT) records Sep 10, 2019 as the last time <input type="submit"> 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 v0.14.5.