how do I see bounced emails when i send an estimate

I'm here to guide you to view the bounced emails, @brett42.

You can follow these steps:

1. Open your QuickBooks Online.
2. Under Tasks, select View the errors. Please take note that the View the Errors link lists the emails with delivery errors sent through your email provider's server.
3. In the Delivery errors section, the delivery date, type, Ref No., Customer, error, and delivery method are found.

For more detailed information, you can check the article: View list of bounced emails with delivery errors.

Let us know if you have further questions. We'll be right here to help you anytime.