text-orientation
Sets the orientation of the text characters in vertical mode.
Outlook
Windows
2013
2016
2019
2021
Windows Mail
2023-12
macOS
2023-12
16.80
Outlook.com
2023-12
2024-01
iOS
10
11
12
13
14
15
Android
2023-12
Samsung Email
Android
2023-12
Mozilla Thunderbird
macOS
2023-12
Fastmail
Desktop Webmail
2023-12
HEY
Desktop Webmail
2023-12
LaPoste.net
Desktop Webmail
2023-12
1&1
Desktop Webmail
2023-12
Android
2023-12
Mail.ru
Desktop Webmail
2023-12
WP.pl
Desktop Webmail
2025-09