<ul>, <ol> and <dl>
Support for lists in HTML: <ul>, <ol>, <li>, <dl>, <dt> and <dd> elements.
Outlook
Windows
2003
2007
2010
2013
2016
2019
Windows Mail
2020-04
macOS
2011
2016
Outlook.com
2020-04
iOS
2020-04
Android
2020-04
Samsung Email
Android
6.0
Mozilla Thunderbird
macOS
68.7
Fastmail
Desktop Webmail
2021-07
HEY
Desktop Webmail
2020-06
LaPoste.net
Desktop Webmail
2021-08
1&1
Desktop Webmail
2022-06
Android
2022-06
Mail.ru
Desktop Webmail
2020-10