Hi Indigotech,
Page 12 of the Microsoft Exchange Online for Enterprises Service Description (last updated 12 December 2012) says “All subscriptions include organization-wide capabilities such as journaling”.
Also, the Exchange Online Preview Service Description (last updated 24 January 2013) lists journaling as an available feature in Exchange Server 2013, Office 365 Midsize Business, Office 365 Enterprise E1, Office 365 Government G1, Office 365 Enterprise E2, Office 365 Education A2, Office 365 Government G2, Office 365 Enterprise E3, Office 365 Education A3, Office 365 Government G3, Office 365 Enterprise E4, Office 365 Education A4, Office 365 Government G4, Office 365 Enterprise K1, Office 365 Government K1, Office 365 Enterprise K2, and Office 365 Government K2.
See here: technet.microsoft.com/.../jj819276.aspx
Hope this helps,
Caren
