I'm trying to add a rule that will send an email after a profile form is completed. The trigger is Added to a Group. The condition is the group created by the profile form. When I try and select send e-mail for the action, I get this error message. "Not a valid action, action class is missing" Using WordPress.
It looks like the Send Email action is not present, did you install the Email API extension (https://civicrm.org/extensions/e-mail-api)? This enables the Send Email action.
If you did, can you check if the action is actually in your database? The table is civirule_action.