Welcome, @scantave.

It's nice to have you here in the Community. I'm here to share some insights about invoices that are auto sending in QuickBooks Online (QBO).

One possible reason why your invoices are auto-sending is that you might have set up a Recurring Transaction specific to invoices. To prevent these invoices from sending on their own, you'll edit or delete (depending on what you prefer) the Recurring Transaction template that you've created.

Here's how:

1. Click the Gear icon at the top.
2. Pick Recurring Transactions under Lists column.
3. Locate the Template.
4. On the Action column, click Edit then remove the checkmark on Automatically send emails, then Save Template.
5. Or go back to the Action column, then click the drop-down beside Edit and choose Delete.

6. Select Yes.

Please see the attached screenshots below.

For your reference, you can check out this article for more information: Recurring Transactions in QuickBooks Online.

That should prevent your invoices from auto-sending. Please let me know how it goes or if I can be of additional assistance by leaving a comment. Enjoy your weekend.