this is very frustrating , I am having the same problem , how are we supposed to check if the email has bounced?

I have done scything you say but , under dashboard there is not a tasks icon , so am unable too click on something that isn't there . Is it under something else ?

I thought the whole idea of quickbooks was to make it easier , I have just sat for the past three hours trying to find this. 

Also when I send statements and invoices it sends multiples of the same statement or invoice , this is most annoying and looks totally unprofessional , how can I stop this happening