Beyond that, there's plenty of room for integrations, e.g. issue trackers we use at @write_as (Phabricator / GitHub) and other comm platforms
For the inbox UI, current idea is a chat-like "buddy list" -- the focus is on names of people who've emailed, not subject lines. This is just like #DeltaChat, but actual message composition will still reflect classic email -- long-form instead of short chat messages.
@matt Flexibility. To set a view, maybe save it for a few days, and then trash it when the need ends. But you can easily toggle between saved searches and sorts without having to undo everything each time.
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