Hello there, GBTH.
I understand how confusing it is to see an invoice marked as Sent when you're certain it hasn’t been sent through QuickBooks Online. Let’s take a closer look to clarify why it’s showing that way and ensure everything aligns with your expectations.
In QuickBooks Online (QBO), the status Sent indicates that an invoice has been sent via email. To confirm, you can check with the owner of the recipient's email address to confirm if they received the invoice.
If they haven't received the invoice, let's check its status through the Audit history to find out if one of the users accidentally sent it out.
Here's how:
- Go to All apps, then click Sales & Get Paid.
- Select Invoices and choose the specific invoice.
- Click View/Edit, the More actions.

- Hit Audit history.

- From there, you can check the transaction history.

Once confirmed that the invoice wasn't sent, this could be an unusual behavior in your account. With that, I recommend reaching out to our QuickBooks Live Support team. This way, they can check your account and identify the root cause of the issue using specialized tools.
Come back to this post if you have other questions or concerns.