Judge whether an email is important/urgent using content-based analysis rather than sender name or mailbox labels (which can be spoofed). Use when asked to triage emails, decide priority, detect phishing/social-engineering, or recommend next actions (reply/pay/login/download/click) based on what the message asks the user to do.

通过内容分析判断邮件是否重要或紧急，而非依赖发件人名称或邮箱标签（这些容易被伪造）。在需要对邮件进行分类、确定优先级、识别网络钓鱼或社会工程攻击，或根据邮件内容建议用户下一步操作（回复/支付/登录/下载/点击）时使用。