Whether you work a corporate job or find yourself signing up for all of those emails to save 20% on your first order from that random brand you got an ad for on Instagram, inboxes become filled easily ...

What's the number of unread emails—right now, at this moment, without changing anything—in your inbox? That would be 3,487 in the case of Jen here; 1 in the case of Rebecca. More about what that means ...