With Google Apps implementation, it is possible to download your Google Apps mail to your local computer and work offline. This Google help page will show you how to configure email clients as needed.
Should you need to read your email from a mail client, Mac Mail, Thunderbird or Outlook, please following Google documentation found at
Your username is email@example.com
and IMAP server is imap.gmail.com
SMTP server is smtp.gmail.com
If you need further assistance, please feel free to create an IT support ticket or contact your office IT Coordinator.