I don't have A2010 yet.

In Access we might have an app that presents a record and we want to
generate at document from it. With mailmerge we can do so, Could a web
app do something like present a record, hit a "doc" button, and print
the "mail merged" doc? I'd assume a Word template would be stored on
the Sharepoint server. And it would be called. But how would one pass
the data to be merged to it?

Salad wrote:

With a desktop app one can also create an email and with limited
attachment capability. I suppose in a WebApp one can create/launch an
email application but can one attach anything to it?

If one can launch the email app, can one attach data from the app? IOW,
can one export a table to an Excel file or text file the person can attach?