As shown in the following Figure, an MSMQ-based application can send an e-mail message to an Exchange user by creating an MSMQ message and sending it to the MSMQ Exchange connector queue. The MSMQ Exchange connector then reads the MSMQ message from the queue, parses the contents, creates an Exchange message or form, and sends the message or form to the appropriate Exchange recipient.
Figure B.1
MSMQ-based applications must create MSMQ messages in MSMQ Mail format (a subset of MIME). Application developers can create these applications using the MSMQ Mail SDK. For more information, see the MSMQ Mail SDK.