Thank you for revisiting this conversation, LeSLP. Yes, the email originates from our side since the email address ends with @intuit.com.

The email you received about the discontinuation of QuickBooks 2021 software means that QuickBooks release new version of product soon to take advantage of technological advancements, improved features, security enhancements, and compatibility with new operating systems. 

When it's available, discontinuing older versions encourages users to upgrade to a more secure version. As of now, QuickBooks Desktop Pro 2021 is still supported. I suggest checking this article to know more about the service discontinuation: QuickBooks Desktop service discontinuation policy.
 

If you have questions, you can always add another post in this thread or contact our support for more information on the discontinuation and available upgrade options. Take care and stay safe always!