Can you help? I'm trying to find a copy of an email I sent to a client. I did not have it checked to send me a copy. I'm looking for the email not the invoice.

Hello there, energizedsurroun.

We're currently unable to retrieve a copy of the emailed invoices in QuickBooks Online. Instead, we can resend it by opening the invoice and changing it to your email address. 

Moving forward, you can set the reminder to email you a copy of the invoice by following these steps:

1. Click the Gear icon located in the upper right-hand corner.
2. Under Your Company, click Account and Settings.
3. On the left menu, click Sales.
4. Scroll down to Messages and put a check mark on the Email me a copy at (Your email address) box. 
5. You can also enter the email address on the Copy (Cc) new invoices to address and Blind Copy (Bcc) new invoices to address boxes.
6. Click Save and Done.

I've got this article for reference: How to email a sales form or report to multiple email addresses.

Let us know if you need more help with sending emails in QBO. We're always here to help you some more. Thanks.