Yes, indeed, if you send the invoice from Manager. That was my entire point: save the PDF and send the email from your regular email, not from Manager. In other words, send a regular email, with all the formatting, tracking, recall, receipt, or whatever capabilities you might like to use. Attach the PDF of the invoice as well as any supporting documentation. I do it all the time and find it far more convenient to have total control over what I am sending, plus only one repository of emails to deal with. But that's just my personal preference. And I can call up the emails on my smartphone when I'm not at the computer that has Manager on it. Sometimes, integration of functions isn't all it is cracked up to be. Again, personal opinion.