I'm still trying to figure this out. 

1) In the Subject line, is there anyway to include a variable date?  I'd like to use this function to say "Report as of 'date'" where date is the last day of the previous month.  Can you use fields in the subject line?  Is there a field or tag for "end of last month's" date?

2) Can you use html in the Introduction field? 

3) I'm a bit confused by the concept of the single record results section which permits HTML and the use of the {results} field.   I do not necessarily have single record results - I want my customers to get a report that is summarized.   But I also want to make it look pretty.   Will the {results} tag pull in all the records or does it just apply to single records with multiple lines?