My account is set to send emails from my company Gmail, but when I send payment reminders or multiple invoices in one email, it reverts to quickbooks@notification.com ?

Your confusion ends here, @brendanatprontorepairs.

The option to send multiple invoices using a Gmail address is currently unavailable. That's why QuickBooks the email address reverting to quickbooks@notification.com. As a workaround, you'll want to open each invoice and send it using the Gmail address.

I can see that this option is a great idea to improve the software. For now, I encourage submitting feedback directly to our product engineers. They may look into this suggestion and consider adding the option in the future update. To send feedback, you can go to the Gear icon and select Feedback. Then, enter your suggestion and click Submit.

You might want to learn more about sending invoices from your Gmail address. You can read these articles for more details:

• Send invoices from your Gmail address FAQ
• Use your Gmail address to send invoices

Please let me know if you need further assistance sending invoices using Gmail. I'm still open to your replies, @brendanatprontorepairs.