Email clients are stuck in the 90s. The way they look and organized hasn't changed in 20 years. You need to throw out all you think an email client should be and make your own. That is my sincerest suggestion. If you do not believe me go look for yourself. Outlook,Yahoo Mail,Gmail,etc all look the same as the did 20 years ago. I use Thunderbird but I hate how it looks and works. Which is why I asked one of the people at Mozilla if I could contribute. No response yet though.
Amen. I 100% agree with you on all points. I'm not against emails, but against the software we used to manage them.
If it wasn't for so much trouble and different case scenarios I would definitively work on an Email client. I'm sure we're not the only one who are looking for something new and better.
