Hi there, @dedmondjrfred.
Thanks for posting this here in the Community. I'm here to help make sure that this is taken care of, but I have some questions about your concern first.
In order for me to provide you with the best resolution, may I know what specific errors you're getting when sending emails for sales transactions? Any additional details will be much appreciated.
I'll keep an eye to your response, @dedmondjrfred. Have a great rest of the day!
How's it going? I just to want to follow-u on you regarding this. Are you still having the same issue? If so, here's an article with the detailed steps on how to email sales forms directly to your customers from QuickBooks Online: https://quickbooks.intuit.com/community/Help-Articles/Email-sales-forms-directly-to-your-customers-f....
Thanks for being a part of our QuickBooks family. Please post again if you have any other concerns. Take care always!