Specifies the content of the message used with a transport mechanism, for instance mail.

Item Summary
Name	Type	Multiplicity	Description
subjectExpression	property ExpressionType	[0,1]	How to construct the subject of the message that is to be sent.
bodyExpression	property ExpressionType	[0,1]	How to construct the body (text) of the message that is to be sent.
contentType	property string	[0,1]	Body content type, e.
attachment	property NotificationMessageAttachmentType	[0,-1]	Message attachment(s) to be sent out.
attachmentExpression	property ExpressionType	[0,1]	An expression that returns message attachment(s) to be sent out.

Items
- subjectExpression
  
  Flags: RAM,runtime
  
  Multiplicity: [0,1]
  
  How to construct the subject of the message that is to be sent.
- bodyExpression
  
  Flags: RAM,runtime
  
  Multiplicity: [0,1]
  
  How to construct the body (text) of the message that is to be sent.
- contentType
  
  Flags: RAM,runtime
  
  Multiplicity: [0,1]
  
  Body content type, e.g. text/plain (the default), text/html, and so on.
- attachment
  
  Flags: RAM,runtime
  
  Multiplicity: [0,-1]
  
  Message attachment(s) to be sent out. Can be combined with `attachmentExpression`.
- attachmentExpression
  
  Flags: RAM,runtime
  
  Multiplicity: [0,1]
  
  An expression that returns message attachment(s) to be sent out. Returned objects should be of type NotificationMessageAttachmentType.