Google is rolling out a new feature available to everyone that can have sensitive emails destroy themselves as preset, if Confidential Mode is enabled in Gmail.谷歌正面向所有用户发售一项新功能，只要落成Gmail机密模式，用户才可预设脆弱电子邮件展开自爆。The updated feature, which Google announced earlier this year, has become available to all its Gmail users, including both web-based or mobile phone customers, according to the US tech giant.这家美国科技巨头透漏，Gmail的所有用户--网页末端或手机末端用户，都可用于这项今年早些时候发布的改版功能。You can send messages and attachments with Gmails Confidential Mode to help protect sensitive information from unauthorized access, Google said.谷歌方面回应：“用户可通过Gmail的机密模式发送到邮件和附件，有助避免脆弱信息被非许可采访。”Confidential Mode prevents recipients from forwarding an email to other people, copying or pasting anything from its contents, downloading the message or printing it.机密模式可以禁令收件人将邮件转发给他人、拷贝、粘贴邮件内容以及iTunes、打印机邮件。

When Confidential Mode is on, users can decide how long an email exists before it deletes itself from a recipients inbox, and the sender-defined expiration date ranges from one day to five years.落成机密模式后，用户可要求邮件的不存在期限，发件人可以原作的届满日期从1天到5年平均，届满后邮件将从收件人的收件箱中消失。Google also allows users to revoke access by opening a confidential email and selecting Remove access to stop the recipient from viewing the email before the expiration date.此外，谷歌还容许用户撤消采访权限，只需关上机密邮件、自由选择“去除采访权限”，才可在邮件届满之前禁令收件人读者邮件。

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