See http://www.sitepoint.com/forms-in-email/
Test result.
| Client | Form is displayed | Form is functional |
|---|---|---|
| Thunderbird 31 (OSX) | Y | Y (2) |
| Apple Mail 8.2 (OSX) | Y | Y (1) |
| Opera Mail 1 (OSX) | Y | Y |
| Windows Live Mail 2012 (win 7) | Y | Y (1) (3) |
| Outlook 2013 (Win 7) | N | N |
| Outlook.com (web) | Y | N |
| Yahoo Mail (web) | Y | Y (1) (3) |
| GMail (web) | Y | Y (1) (3) |
| GMail App (Android) | Y | Y (1) (3) (4) |
| GMail Inbox (Android) | Y | Y (1) (3) (4) |
| Yahoo Mail App (android) | Y | Y (1) (4) |
| Android Mail (4.4.4) | Y | Y (1) (4) |
| Gmail App (IOS 8.1.3) | Y | Y (1) (3) |
| Apple Mail (IOS 8.1.3) | Y | Y (1) |
| Outlook for IOS (IOS 8.1.3) | N | N |
| Yahoo Mail for IOS | Y | Y (1) (5) |
- The
requiredattribute is ignored - Fields with
requiredattributes are highlighted if empty, but the form can be submitted anyway - Alert on submit
- Input text and textarea fields are not editable
- Result page is opened inside the app