本PAS规定了邮件筛选的要求，并给出了建议，这些要求在更广泛的范围内设定 邮政安全的背景。它供负责计划、递送或采购邮件的人员使用 组织内的处理和筛选服务，以及此类服务的商业供应商。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This PAS specifies requirements and gives recommendations for mail screening, set in the broader context of postal security. It is intended for use by those responsible for planning, delivering or procuring mail handling and screening services within organizations, as well as commercial providers of such services.All current amendments available at time of purchase are included with the purchase of this document.