How to correctly compose a letter for mail ru with support for light and dark themes?

Question

Layout of letters

I came across an article .
But at the very end it is written that this method does not work for mail ru.
Checked - does not work.

Has anyone solved similar problems?
Any experience would be welcome.

Answer 1

Good afternoon!
Our mail in the web interface and in the application on Android already supports media queries for the dark theme. On iOS, they are not yet available, but soon there will be an opportunity too.
More details here: https://help.mail.ru/developers/design/darkmode

Answer 2

look for a crutch
as long as mail ru - a web service, they will cut out any left-handed game that leads to a violation of security, directly or indirectly, therefore ...
and there is no sense from the word at all, although our marketers also draw an increase in conversion from the color of the button - it is necessary justify their salary