command and commandfor attributes

Attributes used to manage popover and dialog open states. Replacing popovertarget/popovertargetaction

Estimated Support About

7.5% + 5.0% = 12.5%

Apple Mail

macOS

16

iOS

18.7
26.9

Gmail

Desktop Webmail

2026-07

iOS

2026-07

Android

2026-07

Mobile Webmail

2026-07

Outlook

Windows

2007
2010
2013
2016
2019

Windows Mail

2026-07

macOS

2026-07

Outlook.com

2026-07

iOS

2026-07

Android

2026-07

Yahoo! Mail

Desktop Webmail

2026-07

iOS

2026-07

Android

2026-07

AOL

Desktop Webmail

2026-07

iOS

2026-07

Android

2026-07

Samsung Email

Android

6.2.13
1

Mozilla Thunderbird

macOS

152

ProtonMail

Desktop Webmail

2026-07
2

iOS

2026-07

Android

2026-07

Fastmail

Desktop Webmail

2026-07

HEY

Desktop Webmail

2026-07

Orange

Desktop Webmail

2026-07

iOS

2026-07

Android

2026-07

LaPoste.net

Desktop Webmail

2026-078

SFR

Desktop Webmail

2026-07

iOS

2026-07

Android

2026-07

GMX

Desktop Webmail

2026-07

iOS

2026-07

Android

2026-07

1&1

Desktop Webmail

2026-07

Mail.ru

Desktop Webmail

2026-07

WEB.DE

Desktop Webmail

2026-07

iOS

2026-07

Android

2026-07

WP.pl

Desktop Webmail

2026-08

Notes

  • 1

    Partial. Not supported with Microsoft (Hotmail/Outlook) accounts.

  • 2

    Buggy. Webmail styles set dialog to display:block so we need to revert with display:revert

Sponsor

Resend

Sponsored by Resend. Email for developers. The best way to reach humans instead of spam folders. Deliver transactional and marketing emails at scale.

Know something we don't?

Is any of the above data outdated? Or do you want to add a new email client to the list? Heads on to GitHub and edit the data file!

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Test it yourself

This feature was last tested on July 13, 2026.

If you want to test this feature in the same conditions as we did, you can get our test code and run a test by yourself. Make sure to follow our testing recommendations first.