Message Stream and Property Synchronization

[This is preliminary documentation and subject to change.]

The CDO Message and CalendarMessage objects automatically synchronize the message item's properties and its associated stream in the Web Store. If you access the item using an ADO Record object and change the item's messaging properties, you must synchronize the properties into the stream manually. Nonetheless, the Web Store provides automatic property promotion from a MIME formatted stream . You can use the Record object to retrieve the item's default stream, write a new MIME formatted stream, and the properties are promoted automatically.

The message item's messaging properties and stream can be out of synchronization, therefore, the CDO Message and CalendarMessage objects always load the item's stream to generate the internal list of messaging properties. On subsequent save, these values are written to the Web Store.