Can someone else access my e mail?

OWA is used to access e-mail, calendars, contacts, tasks and other mailbox contents while on the go. Microsoft provides Outlook Web Access as part of Exchange Server to allow users to connect remotely via Web browsers. Most of the functionality in Microsoft Outlook is also available in this web "look-alike". The most important difference is that Microsoft Outlook lets you work with e-mail, calendars etc. even when you don't have a network connection, while OWA requires a network connection to function.