For a while I treated an empty inbox as proof I was on top of things. Then I noticed I was archiving emails just to feel the satisfaction of zero, sometimes before I had really dealt with them. Inbox zero had become the goal, instead of a side effect of good work. So I stopped chasing it.
The goal is a trustworthy inbox, not an empty one
What the people I support actually need is the confidence that nothing falls through. An inbox I trust is one where every message is in one of a few clear states: handled, waiting on someone, or scheduled to deal with later. Empty is nice. Trustworthy is the job.
Three labels do most of the work
I keep it deliberately simple. A "waiting" label for things I have replied to and expect a response on, so I can chase them. A "today" label for what must be done before I log off. And everything else archived out of sight, searchable when I need it. The point is that an email is never just floating.
Touch it once, decide its fate
The habit that changed the most: when I open an email, I decide what happens to it right then — reply, schedule, delegate, or archive. Re-reading the same message four times across a day was where my hours quietly disappeared.
I rarely hit zero anymore, and I have stopped caring. What I have instead is the thing I actually wanted all along: I can promise someone I will not lose their request, and mean it.