Ugh, the decision to kill of Inbox is what frustrates me the most. I don't think I can go back to regular mail after this. I'd love a self-hosted Gmail client t

Ugh, the decision to kill of Inbox is what frustrates me the most. I don't think I can go back to regular mail after this. I'd love a self-hosted Gmail client that functions identically to Inbox, though (and perhaps is pluggable to other mail providers).