I absolutely agree. Recently switched back to Apple Mail because the Thunderbird UI is just a fricking mess. Settings are so bloated and unordered, it's a pain

I absolutely agree. Recently switched back to Apple Mail because the Thunderbird UI is just a fricking mess. Settings are so bloated and unordered, it's a pain to configure even simple things. The UI itself is cluttered and looks more like 2000 than a modern mail client. Also, I had several issues with mail formatting jumping back and forth. I gave Thunderbird several chances and nothing happened. Now I will not go back anymore until they completely overhauled the interface and user experience.