The thing about Thunderbird's "old annoying UI" is that it's incredibly compact. It fist 3 to 4 times the information in the same space. That looks ugly when yo

The thing about Thunderbird's "old annoying UI" is that it's incredibly compact. It fist 3 to 4 times the information in the same space. That looks ugly when you are used to the modern web trend of lots of padding and whitespace, but the ugly way is just way more practical to me. It's the reason I use Thunderbird and not Apple Mail.