Use a ready signature template from a gallery to create your email signature in Outlook.

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 It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired.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 ...

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在Outlook 中，可以为电子邮件创建一个或多个个性化签名。 签名可以包括文本、链接、图片和图像 (，例如手写签名或徽标) 。

Note: AutoCorrect for symbols only works for HTML (the default) and Rich Text format message. If you are using a plain text format message, you can still use the keyboard shortcuts previously listed.

Set the sensitivity level of a message From your draft email message, select File > Properties. Under Settings, in the Sensitivity list, select Normal, Personal, Private, or Confidential. The default value is Normal. Select Close. When you're done composing your message, select Send. The recipients see the following text displayed in the InfoBar of the received message, depending on the ...

Microsoft prioritizes account security and works to prevent people from signing in without your permission. When we notice a sign-in attempt from a new location or device, we help protect the account by sending you an email message and an SMS alert. If your phone number or email changes, it's important to promptly update the security contact info on the Security basics page so we can work with ...

Learn how to download and install apps you need from your Microsoft 365 business subscription.

A phishing email is an email that appears legitimate but is actually an attempt to get your personal information or steal your money. Some deceptive emails appear to be from a safe sender but, in fact, have a "spoofed" source address to fool you. Here are some ways to deal with phishing and spoofing scams in Outlook.com. Spoof intelligence in Exchange Online Protection helps prevent phishing ...

在 iOS 设备上安装 Authenticator 扫描 QR 码或从 Apple 应用商店下载并安装 Authenticator。 重要: Microsoft不再支持超过一年的 Authenticator 版本。 始终使设备保持最新状态。