Including essential messaging apps - Gmail and Google Calendar.

• Continuous innovation – Put the web's rapid pace of innovation to work for your business.
• Lower cost – No hardware, software or patches, so you save money. Estimate your savings
• Universal access – Access your data from anywhere. Use Gmail or another client. Connect with IMAP, POP, Microsoft Outlook or from mobile devices.

• Enterprise-class service – Google Apps includes a 99.9% uptime SLA and synchronous replication.* Phone support is available for critical issues.
• Secure infrastructure – Multiple layers of protection keep your business data safe and secure. 
• Easy switch – Learn more about the benefits of migrating from Microsoft Exchange.

• Get control of spam – Advanced filters keep spam from your inbox so you can focus on messages that matter.
• Keep all your important email – 25 GB of storage per user lets you keep just about anything you think may be important down the road.
• Unified communications – Email, instant message, and make high-quality voice and video communication without launching a separate application.
   
• Find old messages instantly – Google search technology is built in, so you can find emails and instant message conversations quickly.
• Prevent data leaks – Create custom inbound and outbound policies to keep sensitive information safe with Email Security.
• Interoperability – Sync your Microsoft Outlook inbox with Gmail.

• Get people together easily – Just pick a time (based on when people are free) and enter meeting details. Google Calendar will send invitations and keep track of RSVPs.
   
• Share project calendars – Share whole calendars company-wide or with specific people. Coworkers can have editing rights and see shared events alongside their own schedules.
   
• Show event information in context – Embed an internal calendar in Google Sites or publicly on your website, no programming required.
   
• Interoperability – Sync your Microsoft Outlook calendar with Google calendar.