I didn't have the absolutely most recent update, but have since done so. And yes, the email I use is supported (Mac Mail). I didn't use the "Send as PDF" option, just the straight "Email Forms". My problem now is how to test that this update fixes the problem. The nature of our organization is we send these emails out (roughly the same number) once every 6 months, and there are no more to send until October. It's sort of like testing dynamite, you know?
I tried changing a couple of settings in Mac Mail, like disabling spell checking. BTW, this function (direct mass mailings of invoices from QB) is the only use I make of Mac Mail, and only because QB offers me no other option. For my personal use I use Thunderbird and have had occasion to do mass mailings of multiple attached PDFs many times without incident.
