For Android, you can get our beta app by joining our public Android Insiders group. For iOS, you'll first need to install TestFlight on your iOS device. You can find it here or in the App Store. Once TestFlight is installed, you can join from your device. You'll then be able to download and install our beta app via TestFlight.

About digital signatures and certificates in Office, and buying a digital certificate from a certificate authority or create your own.

Microsoft Support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows 11, Surface, and more.

How to add a signature to your Word documents. You can also use the Signature Line command in Word to insert a line to show where to sign a document.

若是 iOS，您必須先在 iOS 裝置上安裝 TestFlight。 您可以在 這裡 或在 App Store 中找到它。 安裝 TestFlight 之後，您就可以 從您的裝置加入。 然後，您就可以透過 TestFlight 下載並安裝我們的 Beta 應用程式。

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在Outlook中，您可以為電子郵件建立一或多個個人化簽名。 您的簽名可以包含文字、鏈接、圖片 (影像，例如您的手寫簽名或 ...

你可以向电子邮件签名添加链接和图像，更改字体和颜色，并使用 “编辑签名” 下的迷你格式栏来对齐文本。 还可以在签名中添加社交媒体图标和链接，或自定义我们预先设计的 temlate 之一。

For assistance with getting your device moved to the correct Microsoft 365 update channel, contact your internal help desk or technical support. In the meantime, the web versions of the Microsoft 365 applications are available to you without the need for a channel update.

Use rules to automatically perform specific actions on email that arrives in your inbox. For example, you can create rules that will change the importance level of messages as they come in, automatically move them to other folders, or delete them based on certain criteria. Select a tab option below for the version of Outlook you're using. What version of Outlook do I have?