Thanks for joining this thread, @Marsha68. I appreciate you for providing in-depth details of your concern about emailing your invoices correctly in QuickBooks Desktop (QBDT). Let me share some troubleshooting steps to get this sorted out.

To start, please make sure to use the correct invoice template to make sure it will look how you'd like this to show up after sending the PDF file. Check out this article for more details about updating necessary company or transaction information: Use and customize form templates.

Moreover, let's make sure to choose the correct email template you've created so QuickBooks will use it properly. Here's how:

1. Go to the Edit menu and pick Preferences.
2. Choose the Send Forms menu and then the Company Preferences tab.
3. Highlight the template you want to use and click Edit.
4. Copy the message body text.
5. Go to the File menu and hit Send Forms.
6. Select the email you want to send. Paste the copied text into the body section. Tap Send Now.

If the issue persists, please follow the steps below to make sure the program will use the correct template:

1. Find and open the transaction you want to send.
2. Select to uncheck Email Later box. Then pick Save & Close.
3. Reopen the transaction. Choose to check the Email Later box. Then tap Save & Close.

However, if this isn't what you mean, can you please provide some screenshots of how it showed up when previewing the PDF and how it looked when your son received it? This way, we can give the appropriate resolution to your specific concern. Please don't forget to hide the important details from your screenshots.

I'm always around and ready to assist if you need a hand with emailing your invoice transactions or any QBDT-related queries. Wishing you and your business continued success in all that you do. Take care always.