ID selector

The ID selector (#id) allows to apply styles to an element with the corresponding id attribute.

Estimated Support About

78.05% + 7.32% = 85.37%

Apple Mail

macOS

12.4

iOS

13.1

Gmail

Desktop Webmail

2019-10

iOS

2019-10
1

Android

2019-10
1

Mobile Webmail

2020-02

Outlook

Windows

2003
2007
2010
2013
2016
2019

Windows Mail

2019-10

macOS

2011
2016
16.80

Outlook.com

2019-10
2024-01

iOS

2019-10

Android

2019-10

Yahoo! Mail

Desktop Webmail

2019-10

iOS

2019-10

Android

2019-10
2

AOL

Desktop Webmail

2019-10

iOS

2019-10

Android

2019-10

Samsung Email

Android

6.0

Mozilla Thunderbird

macOS

60.3

ProtonMail

Desktop Webmail

2020-03

iOS

2020-03

Android

2020-03

Fastmail

Desktop Webmail

2021-07

HEY

Desktop Webmail

2020-06

Orange

Desktop Webmail

2019-10
2021-03

iOS

2019-10

Android

2019-10

LaPoste.net

Desktop Webmail

2021-08

SFR

Desktop Webmail

2019-10

iOS

2019-10

Android

2019-10

GMX

Desktop Webmail

2022-06

iOS

2022-06

Android

2022-06

1&1

Desktop Webmail

2022-06

Android

2022-06

Mail.ru

Desktop Webmail

2020-10

WEB.DE

Desktop Webmail

2022-06

iOS

2022-06

Android

2022-06

WP.pl

Desktop Webmail

2025-04

Notes

  • 1

    Partial. Not supported with non Google accounts.

  • 2

    Buggy. The first <head> in the HTML is removed, so <style> elements need to be in a second <head> element.

Resources

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Is any of the above data outdated?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!

Edit this page on GitHub Report an issue on GitHub

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Test it yourself

This feature was last tested on October 13, 2019.

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.

View the test code