None of my emails are sending(invoices/estimates ect

Hi dnortonconstruct, 

Thanks for reaching out to us here. I'll be happy to assist so you ca get back to sending sales forms to your customers using QuickBooks. 

To get started, it's important to point out the variables that may be causing this issue. Here are the common variables:

• Sudden loss of internet connection
• Piled-up cache on your browser
• System or server issues

I recommend clearing cache and cookies on your browser. Clearing cache and cookies helps with fixing most browser issues. You can do this by following the steps in this article: Clear Cache and Cookies. I encourage you to give this a try on your browser when you get a chance. 

Feel free to let me know what happens. I'll be here in case you have other questions.