Specifies the type of messages in the specified folder or folders that a rule should be applied to.
public enum OlRuleExecuteOption
|olRuleExecuteAllMessages||Executes a rule against all messages in the specified folder or folders.|
|olRuleExecuteReadMessages||Executes a rule against messages that have been read in the specified folder or folders.|
|olRuleExecuteUnreadMessages||Executes a rule against messages that have not been read in the specified folder or folders.|