SMS on MY PC

I used the same address and all the places I sent the messge from (Outlook, Gmail, COX Webmail, and Outlook web)

Since you are using the same address in all the different clients, the next thing we would want to try is a completely different email address to send the message. There are many options for free email out there and since you are already using many of the different platforms, you can choose one to create a brand-new email to send from. I would start out with a really simple email address that does not include words like "test account", "email", "info", "admin", "automated", etc. Those types of email addresses get caught by spam filters and I don't want you to run into an issue like that while trying to do this test.