Secure messages with a digital ID in Outlook - Microsoft Support
Signing your email messages with a digital ID helps to prove your identity and prevent message tampering.
Applies To:
Outlook for Microsoft 365, Outlook 2024, Outlook 2021, Outlook 2019, Outlook 2016, New Outlook for Windows
在 Outlook 中建立及新增電子郵件簽名 - Microsoft 支援服務
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 ...
Applies To:
Outlook for Microsoft 365, Outlook 2024, Outlook 2021, Outlook 2019, Outlook 2016, Office for business, Office 365 Small Business, Outlook on the web, Outlook.com, My Office for iPhone, New Outlook for Windows, Outlook on the web for Exchange Server 2016, Outlook on the web for Exchange Server 2019
Microsoft Support
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.
Set up an Outlook account on the iOS Mail app - Microsoft Support
Add your Outlook.com, Microsoft 365, or Exchange-based email account to your iPhone, iPad, or iPod Touch using the iOS Mail app.
Applies To:
Outlook for Microsoft 365, Outlook for Microsoft 365 for Mac, Outlook 2024, Office 2024, Outlook 2024 for Mac, Office 2024 for Mac, Outlook 2021, Office 2021, Outlook 2021 for Mac, Office 2021 for Mac, Outlook 2019, Office 2019, Outlook 2016, Office 2016, Microsoft 365 for home, Microsoft365.com, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Outlook.com, Office 365 operated by 21Vianet - Admin, Microsoft Office, New Outlook for Windows, Outlook on the web for Exchange Server 2016, Outlook Web App
Restore account credentials from Microsoft Authenticator
Restore account credentials from Microsoft Authenticator You can restore or recover your account credentials saved by Microsoft Authenticator. Note: You can only backup and restore on the same device type. For example, accounts backed up using an iOS device cannot be restored on an Android device.
Apply sensitivity labels to email messages in Outlook
You can apply sensitivity labels to your files and emails to keep them compliant with your organization's information protection policies. Sensitivity labels are configured by your administrator and because they're published to users rather than locations such as sites and mailboxes, users in the same organization might see different sensitivity labels to apply. Sensitivity labels help ...
Applies To:
Outlook for Microsoft 365, Outlook on the web, New Outlook for Windows
Using Outlook mobile to sign in - Microsoft Support
Learn how you can use Outlook for Android or iOS to sign into your Microsoft personal or work/school account.
Applies To:
Microsoft 365 Apps for business, Microsoft account dashboard, Outlook for Android, Outlook for iOS
How to use two-step verification with your Microsoft account
Get answers to some basic questions about what two-step verification is, and how to set it up and use it to help keep your Microsoft account more secure.
Register your personal device on your work or school network ...
Note: This article uses a Windows device for demonstration purposes, but you can also register devices running iOS, Android, or macOS. What happens when you register your device While you're registering your device on your organization's network, the following actions will happen: Windows registers your device on your organization's network.
Customer service phone numbers - Microsoft Support
This page provides support links for home users and support phone numbers for business users.