RuleConditions Object (Outlook)
The RuleConditions object include both rule conditions and rule exceptions. The type of rule condition that can be added to a RuleConditions collection depends upon the Rule.RuleType.
The RuleConditions object is a fixed collection. A RuleCondition object or a type that is derived from the RuleCondition object cannot be added or removed from the RuleConditions object.
The Rules object model provides partial parity with the Rules and Alerts Wizard in the Outlook user interface. It supports the most commonly used rule actions and conditions. Although it does not support creating rules with any rule action or rule condition that the Wizard supports, you can still enumerate and enable these rule actions and conditions in existing rules.
For more information on rule conditions, see Specifying Rule Conditions and How to: Create a Rule to Move Specific E-mails to a Folder.