Yes, your supplier may receive a notification. If you're using QuickBooks Bill Pay for QuickBooks Online (QBO), Account588.
Your supplier will automatically receive two notifications. Your supplier will always be notified when payment is scheduled to be completed. The first email confirms that you have scheduled a payment for them. The second email notifies them when to expect the payment.
I'm also adding this article to learn how to manage your account information and transactions: Access your QuickBooks Payments account.
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