I am trying to trigger an email when a new user submits a form with his email address. I followed the tutorial but still it is not sending any email. This is the form setup. It is connected to a database, which is working well.
I notice that this issue when testing my site, if you already have a contacts with the same details (email or name), creating the new identical contact will cause this error .
Delete the contact from the contact list and try again.