Dark email

macOS & Mac Apps

Does anyone know if there is an email client for OSX Catalina that can render email (plain text and HTML) in a dark mode? (And allow me to compose in dark mode too).

I've used Thunderbird, Spark and Apple Mail and none of them appear to do this. For web browsing, I can use extensions like Dark Reader, Dark Text and Light Background or even experimental Chrome dark mode, but for emails I always have to put up with glaring white emails. Particularly HTML.

(As a side-note I'm looking for something similar for Android, but I know this is not really the right place. :))