Hopefully I am just missing something.
I use CiviCRM Version 5.18.4 for WordPress, and I am not a programmer.
I read about CiviRules, and in the documentation, (https://docs.civicrm.org/civirules/en/latest/basic-example-immediate-processing/) the very first,simplest, most basic rule demonstrated uses the action "Send email". So I install CiviRules, and try to do just that. Get to "List of actions..." and no "Send email."
Suddenly, I have to be a developer, to ADD the "Send email" action? And when I look for help here I am led into a maze of suggestions about mgd.php files and adding hook directories and editing tables of the CiviCRM database.
Hey, I just want to send an email to folks when they sign up as contacts. Do I really need to reinvent this? Thanks for helping me understand.