For mail processing to work correctly, the mail designer and the MSMQ application developer must agree on the field names used in the mail. The MSMQ application must know the name of the fields on the form so that it can compose new mail messages and parse received mail messages.
For example, when creating a form that has several fields, the mail designer can use the Microsoft® Exchange Form Designer to specify a name for each field (the name of each field is entered in the Reference Name field on the General page in the Field Properties dialog box). The MSMQ application developer needs to know these names to write an application that can parse the mail messages it receives and compose its own mail messages.
Note For more information on designing forms, see the Microsoft Exchange Form Designer documentation.