Large Mailboxes
Each user gets 5 GB of mailbox storage standard and the ability to send attachments up to 25 megabytes (MB).

Outlook Support
Users can connect to their copies of Microsoft Outlook 2007 or later to Exchange Online, making it easy for them to use the rich client application they know and use every day.

Web-Based Access
For Web-client access, Outlook Web App provides a premium browser-based experience that matches the look and feel of the full Outlook client.

Mobility
Mobile access is available from all phones capable of receiving e-mail, including Windows Phone, iPad, iPhone, Android, Palm, Nokia, and Blackberry devices.

Shared Calendar and Contacts
Users can compare calendars to schedule meetings with Exchange Online and have access to collaboration features like shared calendars, groups, global address list, external contacts, tasks, conference rooms, and delegation.

Security
Every mailbox is accessed through 256-bit Secure Socket Layer (SSL) or Transport layer Security (TLS) encryption and protected with premier anti-spam and antivirus filtering via Forefront Online Protection for Exchange.

Archiving
Automatically archive old messages to a personal email archive to reduce inbox clutter, as well as reduce the liabilities associated with email by applying expiration policies.

Unified Collaboration
Calendars, Contacts, Tasks and Docs

Manage your personal data and share with other users or entire groups through Public Folders and Global Address List via WebClient, Outlook, phone or e-mail client.
 

Unified Communications
Groundbreaking Integration

The first mail server with radically integrated WebClient, Groupware, Instant Messaging, VoIP, SMS, ActiveSync, Outlook Support, AntiSpam, AntiVirus & SmartAttach
 

Content and real-time IP reputation based Antispam technology. Integrated multithreaded antivirus with active updates. Intelligent SMTP intrusion prevention system.