Microsoft Exchange Web Services (EWS) is Microsoft’s latest technology that natively, seamlessly and quickly connects email clients with a mail server. Currently, Microsoft Outlook 2011 for Mac and Apple Mail on both Lion and Snow Leopard support EWS and the upcoming Microsoft Outlook 2012 for Windows will support it as well. EWS is intended to replace the old and antiquated MAPI technology, allowing for much faster communication and access to the latest mail server technologies, and joins the existing methods already provided for connecting desktop clients and SmarterMail together.
NOTE: The Exchange Web Services add-on is only available for SmarterMail Enterprise.