So if you archive it, that's maybe a little hint that either this is just your habit or perhaps that you might actually care about this later in the future, whereas if you delete it, no, you really don't care. Yeah.

如果你把邮件存档，可能暗示这可能,是你的习惯,或者以后还会用到它，相反，如果你删除了它，说明你可能根本不在意这个邮件。

哈佛公开课 - 计算机科学课程节选