I always thought only Microsoft can destroy UI and workflows by establishing new designs and workflow patterns… proved me wrong, k9 devs.
Not having a working back button is more or less the deal breaker for me with iOS devices. Now k9 with this new UI makes the back button useless and as so many complaint let’s me click around my display so much more for getting the same.
I now have always an icon badge on the k9 symbol,even if there is no new mail at all…
Also no longer different notification sounds for every account (the tip mentioned here by a k9 dev does not work: if you set a sound with the android system dialogue for every account you always change it for all other accounts too).
I am an UI designer/dev myself, btw
And why are people writing here in German? I am from Austria and have accepted that the Internet is English!