https://schemas.microsoft.com/cdo/smtpenvelope/ Namespace

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https://schemas.microsoft.com/cdo/smtpenvelope/ Namespace

The https://schemas.microsoft.com/cdo/smtpenvelope/ namespace defines a set of fields that are present for Message objects that are still in transit, such as those passed to SMTP transport event sinks. These fields are accessible from a Message object's IMessage.EnvelopeFields property. These fields are only available for messages that are still in transport, and are therefore only used when writing a transport event sink. For more information, see SMTP/NNTP Transport Event Sinks with CDO.

See Also

Concepts

EnvelopeFields Property
SMTP/NNTP Transport Events Sinks with CDO