Thanks for sharing this matter here in the Community, Troy. Allow me to elaborate or clarify things about this Bill Pay powered by Melio change in QuickBooks. 

The email you received was sent to QuickBooks Desktop users who subscribed to Bill Pay powered by Melio but have never used it or made a payment with it. That said,  these users will no longer have access to it in QuickBooks on September 12, 2023. Instead, they'll be able to sign up for QuickBooks Bill Pay. 

However, if you're actively using Bill Pay powered by Melio, you will not be affected by this change on the said date. 

The change was implemented primarily because of the introduction of QuickBooks Bill Pay, a feature that empowers users like you to settle their bills directly within the QuickBooks platform, eliminating the need for involving third-party services. This alteration aims to streamline the bill payment process, enhancing convenience and efficiency. By integrating bill payment capabilities into QuickBooks itself, you can now manage your finances more comprehensively within a single ecosystem, resulting in a smoother and more centralized experience. 

For more information about it, you can check out this article: Learn about QuickBooks Bill Pay.

I hope this information helps you. If you have other QuickBooks-related questions, let me know in the comments below. I'll gladly answer them for you.