How to I find the layout of the Mail.dat files produced by MailStream Plus

Product Affected:  MailStream Plus™, all versions, all platforms

The layout of the Mail.Dat files are provided by Idealliance. These layouts are called Specifications. Their homepage is:

To get directly to the specifications page use this URL-
Then you download the version you need.

In your MailStream Plus job, to know what version MailStream Plus is creating, in your REPORT MAILDAT output report (which is not one of the actual Mail.dat fileset files) you will find -

                         Job ID: IVP                    
            IDEAlliance Version:               <- this is the version of the Specifications to download
 Header History Sequence Number: 9999                   
          Header History Status: C                      
              Historical Job ID: IVP                    
     Licensed User's Job Number: IVP                    

UPDATED:  June 28, 2019