A question for ALL users affected by this issue (please reply):

I don't want to distract from the main issue being discussed here (inability to email invoices - of which I am an affected user), but I do have a question for everyone:  Since this problem started with R5 QB 2020 for Mac, have you also experienced frequent, unexplained OS crashes / freezes (even when QB is not running)?

Again, that is not the topic of this thread, but it just hit me... I also have a case open with Apple (since January) stemming from near-constant Mac Catalina OS crashes (2-5 times per day).  And guess what... the crashes started right when I installed R5 QB 2020.  Are you having the same issue?  Please reply if so.  We may have a larger software incompatibility issue here.

Thanks all,

Micheal