选择要从中发送数字签名消息的帐户，然后选择“ 高级 > 安全性 ”。 在 “证书 ”中，选择要使用的证书。 你只会看到已添加到 Mac OSX 用户帐户密钥链的证书，以及那些对数字签名或加密有效的证书。 若要详细了解如何将证书添加到密钥链，请参阅 Mac 帮助。

可以自定义附加到电子邮件的签名，以反映以个人品味、公司徽标或特定心情。 签名可以包含文本、链接和图片；例如，可以创建包括姓名、职务、电话号码和公司徽标的商务电子邮件签名。

How to create or edit your Outlook signature for email messages. Include your signature, text, images, electronic business card, and logo.

若要创建电子签名请求，需要使用可用的电子签名提供程序（如 Adobe Sign 或 DocuSign）登录到帐户。 如果没有帐户，可以轻松开始免费试用或创建帐户。

This article is for setting up your email account only! If you're having trouble using the Outlook for iOS app, please visit our FAQs for more self-help information. If you have a work or school account that uses Microsoft 365 for business or Exchange-based accounts, there may be additional requirements set by your IT admin. For example, if you have a company-managed device, an on-premises ...

A popular tactic of criminals is the "fake order" scam. The way it works is that you get a message, usually in email or text, that appears to be a routine confirmation for an order. Of course, you never ordered whatever product or service it's confirming. The message looks common enough, and it says that money will be charged to your credit card or withdrawn from your bank account for the ...

培训：在 Outlook for Mac 中创建可自动添加到电子邮件的自定义签名。 电子邮件签名可包含文本、图像、电子名片、徽标或甚至手写签名。 观看本视频，了解如何操作。

View message headers in new Outlook Select More actions at the top of the message window. Select View > View message details. Find the sender's address in new Outlook Scroll down in the Message details until you find the From field. Highlight the email address enclosed within < > and right-click to Copy. Use this email address to block the sender. Read how to block or unblock senders.

Learn how to set up your user account for multifactor authentication with Microsoft 365.

To capture someone's attention in an email or meeting invite, type the @ symbol followed by their name within the message or invite. Doing so will highlight their name and prompt Outlook to add them to the To line, ensuring they notice, and add the @ symbol next to their message in the Inbox. Select a tab option below for the version of Outlook you're using. What version of Outlook do I have?