I have installed your plugin today, everything was fine during installation, but once I tried to test the form and send myself a message, I always got message:
Failed to send your message. Please try later or contact the administrator by another method.
I thought it was because I entered dummy content, so I tried again with long and legit content, however I still got the message. It says that this message occurs if "submission was referred to as spam", I don't understand how to fix the issue. I got simple captcha installed and am using it on a form as well.
Has anyone encountered same problem?
As a sidetone, I am testing on a local machine mamp / wamp server.