Great to see you again, @efish123. I have the information you need regarding bill payments with QuickBooks Bill Pay.

To clarify, when QuickBooks notifies vendors, it will not include invoice numbers. Instead, your vendor will receive two emails. 

• The first email will notify the vendor of a scheduled bill payment. 
• The second email will alert the vendor that the payment is on its way and to expect it soon.

Please note that we do not notify your vendors in case of payment cancellations or failures.

On the other hand, you cannot combine multiple bills into a single payment to a vendor using Bill Pay. Therefore, Bill Pay will create multiple payments when paying multiple bills at one time to the same vendor.  

For more information about QuickBooks Bill Pay, you can visit this article:  Learn about QuickBooks Bill Pay.

Moreover, you can review this material to generate data on all the money paid to a vendor for the year: Run a report with vendor totals.

Please let me know. If you have any other questions when creating multiple payments. I'm looking forward to hearing back from you.