Gmail. The most popular email application for phones is having a dark mode implemented for all users. In the image below, you can see how this dark mode appears on Android phones, and Google is starting to test this change for beta users.
Gmail. The new dark mode was implemented by Google only in the application settings application for Android phones, and was not even implemented correctly. This is perfectly normal since the Gmail app for Android phones is already available in the beta but will be substantially changed.
Gmail. Surprisingly, Google has not implemented this functionality so far for Android because this has happened in others. Of course good changes can occur at any time on your phones, so it's very clear that we'll see the dark mode very soon in Gmail for Android, but even for the iPhone.