An S/MIME receipt is an email security feature that is used to request confirmation that an email message was received unaltered. It also includes information about who opened the message and when it was opened. This verification information is returned as a message in your Inbox.

打开 S/MIME：. 在 Outlook 中，点击左上角的 “帐户” 控件，然后选择左下角附近的 “设置” 按钮。. 点击要为其启用 S/MIME 的特定帐户。. 点击“ 安全性 ”，应找到为该帐户启用 S/MIME 的开关。. 注意: 如果未看到帐户的“安全”选项，则可能是帐户类型或电子 ...

Encrypting an email message in Outlook means it's converted from readable plain text into scrambled cipher text. Only the recipient who has the private key that matches the public key used to encrypt the message can decipher the message for reading.

A digital signature assures recipients that the message hasn’t been tampered with. Outlook on the web requires a Windows desktop device to support S/MIME. S/MIME isn't available in Outlook on the web on Mac, iOS, Android, or other non-Windows devices. S/MIME might not be available for your account.

Check your email for the single-use code and copy it. Enter the code in your browser, then select Continue to read your message. Learn how to open an encrypted email in Outlook, Outlook on the web, or read a protected message with a single-use code.

通过将 S/MIME 切换为打开，可启用该功能，并允许签名、加密和签名 + 加密选项显示在撰写窗口中。. 如果没有启用此功能，S/MIME 将不会运行。. 打开 s/mime：. 转到特定帐户，然后点击该帐户。. 在安全选项下，有一个选项可切换或关闭. 如果此选项（安全）未 ...

You can use S/MIME in Outlook Web App to increase the security of messages. A digitally encrypted message can only be opened by recipients who have the correct key. A digital signature assures recipients that the message hasn’t been tampered with. Note: S/MIME may not be available for your account.

在設定畫面啟用 S/MIME。. 將 S/MIME 切換至 [開啟]，即可啟用這項功能，並可讓您在撰寫視窗中顯示簽名、加密和簽署 + 加密選項。. 若未啟用這項功能，S/MIME 將無法運作。. 若要開啟 S/MINE：. 移至特定的帳戶，然後點選該帳戶。. 在安全性選項底下，可以選擇開啟 ...

如果收到来自使用Microsoft 365 邮件加密的组织的加密邮件，则可以使用 Microsoft 帐户 或与 Microsoft 365 一起使用的 工作或学校帐户 登录以查看您的消息。. 如果您没有 Microsoft 帐户，则可以按照此过程创建一个。.