Microsoft has released Windows 11 KB5066835 and KB5066793 cumulative updates for versions 25H2/24H2 and 23H2 to fix security ...
While you can't italicize text when sending messages on an iPhone, you can italicize on an iPhone in Mail, Notes, and Pages.
There's a way to turn off auto-capitalization on an iPhone through its Keyboard settings, and make sure that you only type what you want to type.