What are LIFO and FIFO?LIFO and FIFO are terms that come from the financial world—respectively, they stand for “last in, first out” and “first in, first out.” They’re often used by accountants to describe inventory but can refer to anything where items are coming “in,” like, well, emails. In this context, it refers to the practice of responding to either your oldest or your newest unreads first, then working your way in the opposite direction from there.Why is LIFO better than FIFO for email management?LIFO, or the practice of answering the most recent emails before older ones, is much more common than FIFO for good reason: Your more recent emails are timely and, depending on how old the past ones are, the ship on being late to them has already sailed. You should focus on the tasks at hand to stay on top of your work.