Hosted MS Exchange provides the core features of Exchange Server, so your users
get the business-class messaging capabilities they need to be productive including:
- Large mailboxes : Each user gets 2 GB of mailbox storage.
- Antivirus/anti-spam: Multiple filters and virus-scanning engines
to help protect your organization from spam, viruses, and phishing scams.

- Mobility: Mobile access is available from all phones capable of
receiving e-mail, including Windows Phone, the 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.

- Administration center: A centralized, Web-based administration
console enables you to configure Exchange Online to manage subscriptions, provision
users, reset passwords, and configure services from anywhere you have Internet acces.