Migrate existing users and help them get up and running.

Set up your domain to meet your unique messaging and mail relay requirements.

Use OLSync (formerly GALSync 2010) to replicate and synchronize user data between your on-premises Active Directory and the cloud-based service.

Manage all recipient types and Windows Live IDs , reset user passwords , and help your users get the most out of the service.

Fine-tune organizational management and user access by assigning specific permissions and capabilities to users.

Check out the tools and functionality that support your organization's security and compliance strategy.

Learn how to install and configure this powerful command-line tool.

Synchronize your users' mobile devices with Exchange ActiveSync.

Got questions about managing your org? We've got answers.

Learn how to perform common administrative tasks.