The following help article describes the process of generating statements, but does not describe what exactly occurs when EMAIL is the selected delivery method.

https://quickbooks.intuit.com/community/Income-and-expenses/Create-a-billing-statement/m-p/203693

Are there more steps, or a preview? Does it immediately process and send the messages, or are they queued up the way invoices work with email later selected?

What happens if there's no email address on 1 of the 100 statements. Does it kill the whole process, or bypass that 1, and if so, do you receive any notification about who's statement didn't send?

In my case, using Outlook desktop for emailing from QB desktop 2018.