Hello there, shaun5.
I have a workaround for this. You can send the estimate outside QuickBooks Online using your Gmail or Yahoo account. Then, send it as an attachment.
Here's how to do this:
You can do the same steps for the rest of your transactions.
If you have more questions, I'll be here to help you out.
Thanks for getting back to this thread, @shaun5.
Allow me to step in and help guide you about changing the email information to customer-facing email in QuickBooks Online (QBO).
In order to receive the customer's responds directly to the customer-facing email, you'll need to update it on your QuickBooks account and settings.
Let me walk you through the steps:
Also, you can always visit our Help Articles page to learn more "How do I" steps In QuickBooks Online.
That should do it! Fill me in if you have additional questions about updating the email. Have a good one.
Hi there, @shaun5.
Let's use an incognito window and re-enter your customer-facing email. Then, you can try to send an estimate to your email.
Once done, reply to the estimate and check where it was sent. If the same thing happens, I suggest contacting our support team.
You can check this article for your reference: Contact the QuickBooks Online Customer Support team.
Please don't hesitate to drop your questions or concerns below. Have a nice day!