Quickbooks desktop premier 2019 no memory error when emailing?
I've checked the status of the investigation that was attached to this thread and found out that the case was already been closed.

You can open your Spam folder to check if the notification was routed. If you haven't received any update yet, I recommend giving us another call so we can check why there was no email update.

Here's how:

Go to the Help icon and select QuickBooks Desktop Help.
Select Contact Us.
Give a brief description of your issue, then select Continue.
We’ll provide you a few support options. Select which one is best for you.

To ensure we address your concern on time, check out our support hours.

In the meantime, it would be best to update QuickBooks Desktop to apply the fix that was recently released.
As you can reach us Quickbooks Customer Service Phone Number.+1 346-414-8256,TX.