Hello! We are having an issue where a sizable amount of customers are not receiving invoices after we send them out. We are using the 'Invoice Sales Orders' mass update page. I've looked at the communication tab on the invoices that customers say they're not getting, it all appears to be correctly mailing to the right address. I checked the bounced email list and so far none of the customers complaining have been on the bounce list either. Anyone have any ideas?

This is probably due to NetSuite blocking outbound emails with the same subject line. You could always reach out to NetSuite support to confirm, but I would bet money that's why. I usually create workflows to get around that issue because when emailing via workflow you get the option to create unique subjects that include the customer name/invoice number.

Our subject lines for those emails are "Our_company_name: Invoice # XXXX", so they should be unique though

In that case I would reach out to NetSuite support. I have come across that issue with statements and that was the cause

@NS You might also see if there's a common link. We had this problem a while back "all of a sudden". For us, it was Google/Gmail/Gsuite-based businesses that our email was not going through to. NS was registering sending it fine, Google servers "acknowledging" it fine, but not getting to customers. It turns out the "from:" address had been "burned" as a spammer. While other addresses from our company were going through just fine. We changed our "from:" address to something else equally as transparent (orders@[company].com verses online-orders@[company].com), and complaints went away.

We tried a combination of the workflow and changing the from address and so far a customer that hasn't received an invoice from us since December has received one! Thanks guys. Hopefully it works long term.