I appreciate you for getting back to us here in the Community. I can share some information about the supported email services in the newer QuickBooks versions.
The Desktop version of the product supports most of the email providers available. As long as they aren't using a Starttls encryption, you should be able to connect.
You can check out this link for the list of email services together with their SMTP servers: Connect your email to QuickBooks Desktop.
If you want to navigate the newer version before purchasing, I recommend using our test drive. To download, you can follow the detailed instructions in this link: Download a trial of QuickBooks Desktop.
I've also attached an article you can use to know more about the email apps you can integrate with QuickBooks: System requirements for QuickBooks Desktop 2021.
Let me know if you have any other questions about the emailing features or sending statements. I'll be happy to help you some more.