Hello zaliyanna,
in the parameter view ot the email field, you have the "How to setup this field ?" link.
After the select in which you set never, you can write the name of your article state field.
When this field will have the value 1 (like submission), the email will be sended.
But careful, if you edit again the article, and the article state field is set to 2 (archived for article) (On edition for email), the email will also be sent.
Regards.
Lionel