<input type="submit"> element
HTML input type submit
Outlook
Windows
2003
2007
2010
2013
2016
2019
Windows 10 Mail
2020-01
macOS
2011
2016
2019
Outlook.com
2019-09
iOS
2019-06
Android
2019-06
Samsung Email
Android
6.0
9.0
Mozilla Thunderbird
macOS
68.4
HEY
Desktop Webmail
2020-06