Hello,
Emailing clients directly from your QuickBooks Online account is so convenient, and it helps to streamline your bookkeeping. This saves you tons of time when things like invoices, estimates, or statements need to be sent to customers. I'd be happy to explain how you can review which emails were successfully sent.
If you received a message stating that not all emails were sent successfully, you can review your Audit Log to see which ones were emailed. To find the Audit Log, click the Gear icon > Audit Log. You can filter your results as needed.
That's all there is to it. Now that you can see which emails were sent and which one's didn't go through, you'll be able to resend the remaining statements.
I hope this helps get you back on track. If there's anything else you need a hand with, please touch base with our tech support team.
Cheers.