The ability to change the 'from' email address with the email templates.
Even though we are a small business, we have different email address set up for different purposes and sites / projects. If we can change the 'from' email address when we create a template it would be extremely useful. At the moment we have to download the invoice or purchase order and then email it separately. We'd love to be able to use that shiny red email button! Thanks. :)