The Accounts module is the center around which the CRM revolves when configured in the business-to-business (B2B) mode. Contacts, Opportunities and Cases all refer to an Account. In the Professional and Enterprise editions, Quotes, Orders, Invoices and Credit Cards are all related to an Account.
The only required field for an Account is the Account Name. If there are any fields that are not used by your business, we encourage you to go to the Admin Layout area and remove them from the layout. Simplifying the CRM is one sure way to increase productivity.
On Professional and Enterprise editions, if Exchange Server Synchronization is enabled, you will see a Create Exchange Folder field. This field is user-specific and it instructs the CRM to create drop folders on Exchange Server.