Invoices being marked as undeliverable
I have been a QB Desktop person for many years, but have moved to QBO for a variety of reasons. Today I created the first invoices for my clients on QBO. I send batches of invoices with a bcc to my email. Some of the invoices I send have a 256 kb attachment. When I started out, everything went smoothly, until after I had sent about 20 invoices, I started to notice that the bccs were no longer showing up in my inbox. Sure enough, when I checked, QBO had a list of transactions with "Delivery Errors". Note that the first 20 or so invoices went easily. Then only some of them went, until none of them were going. I cleared the cache, logged in and out, removed the bcc from the emails. I was able to send or two more at a time, but this isn't actually sustainable. The email addresses are correct. I would be grateful for any help.
