I reached out to the support team yesterday, and was told over the phone it is a SITEWIDE issue, and I would be contacted when it was resolved.

Nevertheless, I tried the steps you mentioned and they did not work.  The email is still not going out.  Of course I can't talk to anybody because now it is the weekend.  I would expect a company like Quickbooks to care enough about its reputation to be working hastily to resolve this issue, which is recurring and costing not only myself but many other business owners.

I am going to lose out on a contract that pays the bills for my business, and I will hold Quickbooks accountable,, you can be sure.