Email has blank

[Conartist]

I use the specify mail feature in FM 7 to send emails of final invoices to my clients. I've noticed that when I look at the saved emails in my sent folder the "To:" field is blank. This is annoying because sometimes it is necessary to have confirmation that an email was sent. I can verify using the date in a field in my database but I would like to be able to see the data in my email client as well. Is there something I'm doing wrong or is this just inherent with sending email w/ the specify mail feature?

The links below are screenshots of my specify mail screen and another showing the error in my sent mail folder.