Message properties and message store properties can be used as transmission rule variables. In both cases you can use predefined properties or you can create custom properties. If you have a message property and a message store property with the same name, the message property is used. To override this precedence, you can explicitly reference the property as follows:

For example, the following automatic transmission rule selects all messages with the custom message property urgent set to yes:

automatic = ias_Message.urgent = 'yes'

The following automatic transmission rule selects messages when the custom message store property transmitNow is set to yes:

automatic = ias_Store.transmitNow = 'yes'