Hmmm... Not entirely clear on the email address, are you saying, for example, that you can run a report with outstanding invoices for (i.e.) 200 customers and insert their email address from your database into the report - giving you 200 invoices on 200 pages with an individual email address on each page?

If this is the case then fair enough, could be a useful product, if you can't do that then the email interface looks a little clunky....

Of course until it's tested with 200 invoices I wouldn't trust it not to fall over - documents and memory managment have never been the best of friends.....