Has anyone that e-filed with mailing through QBO received confirmation the 1099s were filed and contractors received mailing?

Good to see you again here in the Community space, nburgess.

I'd be glad to provide information concerning 1099s in QuickBooks Online.

Once you file your 1099s with the IRS, we will send you an email notification regarding your filing status. Additionally, you can always check your filing status on QBO. Here's how:

1. Go to the Taxes from the left pane, then select 1099 filings.
2. View the status of the e-filing under Filing status. Below is the list of statuses and what they mean:
   
   Not Submitted: You haven't e-filed Form 1099-NEC or 1099-MISC with the IRS. You can continue revising it.
   Submitted: You have e-filed the form to the IRS. Note: If you need to revise it, you may need to file a manual amendment. Use these IRS instructions and forms to do so.
   Received by IRS: The IRS has received your form and is either processing it or has already processed and approved it. Customers who have submitted their 1099 E-File forms will receive a confirmation email approximately a week after the IRS accepts and confirms submissions. You may not receive this confirmation until the middle of January or later.

If you have e-filed with us, we will be responsible for mailing the necessary form to your contractor's address via USPS. The 1099s are postmarked to your contractors. However, the time it takes for delivery may vary, typically taking a week or more. This will depend on various factors such as USPS service, weather conditions, and your contractor's mailing address. If your contractor has not received the forms within seven business days after January 31, you may choose to print the recipient copies from your account and then manually send them.

You can refer to this article for more details about which payments are excluded from the 1099 payroll forms: IRS Reporting Requirements for Third-party Vendor Payments on 1099-K/1099-MISC. 

You might want to view your past tax payments and forms by checking out this guide: View your previously filed tax forms and payments.

Comment down below if you have future concerns with 1099s or payroll forms in QBO. I'm here to listen and help. Good day ahead.