As described in the tutorial, you need to create two separate documents:
1. An e-mail mailmerge main document, which you configure for a normal e-mail merge. This file should contain whatever text you need and a single «Data» mergefield for the data. Save this document in an appropriate folder with the name ‘Email Merge Main Document.doc’. Your mailmerge main document is not set up like that; neither is it named appropriately.
2. A separate Catalog/Directory mailmerge main document, with a single paragraph containing field coding as described in the tutorial. You should add the macros from the tutorial to this document*, then save it in the same folder as the ‘Email Merge Main Document’. You can give this document whatever name you want except for:
• ‘Email Merge Main Document.doc’; and
• ‘EmailDataSource.doc’
Once you’ve done that, run the ‘RunMerge’ macro.

When you run the the ‘RunMerge’ macro, it will create a document named ‘EmailDataSource.doc’. You can delete this file after the merge has finished if you don't need it for anything else.

* You need all three macros from that part of the tutorial. The ‘EmailMergeTableMaker’ macro is called by the ‘RunMerge’ macro; without it the ‘RunMerge’ macro will fail. Similarly, the ‘TableJoiner’ macro is called by the ‘EmailMergeTableMaker’ macro; without it the ‘EmailMergeTableMaker’ macro will fail

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]

Thanks Paul we will try it out. Thanks again for the thorough explanation.