It's a client (several), it allows other clients, and it does the SMTP, POP3 and IMAP thing. It filters spam and sorts things into enumerated named folders, and

It's a client (several), it allows other clients, and it does the SMTP, POP3 and IMAP thing. It filters spam and sorts things into enumerated named folders, and you can download everything and store everything as mbox files with attachments in a big-old folder, and still be able to locally elastic-search it all, or leave it on Google's servers and search through their web UI. Isn't that email-ey enough? If not, what's it missing?