<base>

Specifies the base URL to use for all relative URLs in a document.

Estimated Support About

21.95% + 39.02% = 60.97%

Apple Mail

macOS

15

iOS

15

Gmail

Desktop Webmail

2021-12
1

iOS

2021-12
1

Android

2021-12
1

Mobile Webmail

2021-12
1

Outlook

Windows

2003
2007
2010
2013
2016
2019

Windows Mail

2021-12

macOS

16.56

Outlook.com

2021-12
1

iOS

2021-12
1 2

Android

2021-12

Yahoo! Mail

Desktop Webmail

2021-12
1 3 4

iOS

2021-12
1 3 4

Android

2021-12
1 3 4

AOL

Desktop Webmail

2021-12
1 3 4

iOS

2021-12
1 3 4

Android

2021-12
1 3 4

Samsung Email

Android

6.0

Mozilla Thunderbird

macOS

91.2

ProtonMail

Desktop Webmail

2021-12

iOS

2021-12

Android

2021-12

Fastmail

Desktop Webmail

2021-12
1 4

HEY

Desktop Webmail

2021-12
1

Orange

Desktop Webmail

2021-12
1

iOS

2021-12

Android

2021-12

LaPoste.net

Desktop Webmail

2021-12

SFR

Desktop Webmail

2021-12

iOS

2021-12

Android

2021-12

GMX

Desktop Webmail

2022-11

iOS

2022-11

Android

2022-11

1&1

Desktop Webmail

2022-11

Android

2022-11

Mail.ru

Desktop Webmail

2021-12

WEB.DE

Desktop Webmail

2022-11

iOS

2022-11

Android

2022-11

Notes

  • 1

    Buggy. The element is removed but URLs are still correctly computed in links href attribute.

  • 2

    Buggy. URLs are computed based on the first <base> element found in the <body>.

  • 3

    Buggy. URLs are computed based on the last <base> element found in the <body>.

  • 4

    Buggy. Not supported for local anchor links.

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Is any of the above data outdated?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

Not comfortable with GitHub? Send us an email.

Test it yourself

This feature was last tested on December 01, 2021.

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