Sending email notice to more than one email recipient
which tutorial do you mean? Can you post a link?
I'm a little embarassed to say what was causing my problems. I did find out why nothing I was trying was working: I had a old modified register.php file in the root controllers folder and it was breaking the functions being made by my updated version of Concrete5. When I replaced it with the new file of register.php found in the core and added a cc in the mail helper coding of that file, I got multiple sent emails to work.
In betweem line 146 & 147 of register.php I added:
My general advise to other is when you have an old C5 site and have modified the core files and moved them to the root directory folders, as you are supposed to, sometimes those files need to be removed or reworked.