TotalNet can get you set up on Google Apps so you can have the same email addresses as your domain name, share calendars and documents.
Google Apps is a suite of Google applications that brings together essential services to help your business. This is a hosted service that lets businesses, schools, and institutions use a variety of Google products - including Email, Google Docs, Google Calendar, and Google Talk - on a unique domain (e.g. www.yourcompany.com).
For instance, if you own the domain name example.com, and you sign up for Google Apps services, everyone at your organization will get: