This would be useful because we have just ran our first billing run and customers that have more than 1 device have been sent 1 email with all invoices for that customer attached for the amount of devices they have.
So for example we have a customer who has 7 devices that are billed. They then received 7 emails with the same 7 devices on each email. So this customer received 49 invoices spread across 7 emails.
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