Missive currently allows bulk archiving of emails from connected email accounts, but there’s no way to quickly clear out your entire personal Inbox, which often includes conversations from non-email sources like SMS, WhatsApp, Instagram, or threads where you’ve been @mentioned.
This makes it difficult to achieve “Inbox Zero” when your Inbox contains hundreds or even thousands of lingering conversations that aren’t tied to any owned email account. A one-click “Archive All” for the personal Inbox (regardless of channel) would help users reclaim focus and clean up more efficiently.