Wouldn't this be great?
Maybe in a way Nylas https://www.nylas.com/nylas-mail/ now Mailspring https://getmailspring.com/ does?
E.g.
- Single, unified inbox
- Snooze messages
- Send later
or the possibility to realize something within Evolution like http://www.plainemail.com/
I guess (e-mail) communication has changed over the last decades. So why not overhaul Evoultions way of dealing with it?
All the best!
Anna