Signing your email messages with a digital ID helps to prove your identity and prevent message tampering.

Want to add a padlock to your email messages? You can use encryption and digital signatures in new Outlook, classic Outlook, and Outlook on the web for work or school accounts to increase the security of messages. 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 ...

Outlookでは、電子メール メッセージ用に 1 つ以上のパーソナライズされた署名を作成できます。 署名には、テキスト、リンク、画像、画像 (手書きの署名やロゴなど) を含めることができます。

在Outlook中，你可以為電子郵件建立一個或多個個人化簽名。 你的簽名可以包含文字、連結、圖片和圖片 (，例如你的手寫簽名或標誌) 。

If you’ve forgotten your Microsoft account password, learn how to do a password reset online or by using your Xbox console.

Certificate authority (CA) A certificate authority is an entity similar to a notary public. It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired. Top of Page Digital signature assurances The following terms and definitions show what assurances are provided by digital signatures. Authenticity The signer is ...

瞭解如何在行動裝置、Windows 裝置或 Xbox 主機上兌換 Microsoft/Xbox 禮品卡或其他代碼。

To learn about digital signatures (also known as digital ID), what they can be used for, and how to use them in Word, Excel, and PowerPoint, see All about digital signatures. Create a signature line in Word or Excel (desktop) In the document or worksheet, place your pointer where you want to create a signature line. On the Insert tab, select Add a Signature Line in the Text group. In the ...

Learn how to use mobile operator billing as a payment option to buy Xbox subscriptions, games, and other content.

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