Although I will not support it, I can help with a basic eme_insert_event_action example. Add this to your functions.php and change the $subject_format and $body_format to your liking, using the available event placeholders mentioned at https://www.e-dynamics.be/wordpress/?cat=25 ):
add_action('eme_insert_event_action','eme_mail_event');
function eme_mail_event ($event) {
$contact_email = $contact->user_email;
$contact_name = $contact->display_name;
$subject_format="This is the new event called ' #_EVENTNAME '";
$body_format="This is the new event called ' #_EVENTNAME '";
$subject=eme_replace_placeholders($subject_format, $event, "text");
$body=eme_replace_placeholders($body_format, $event, "text");
$blogusers = get_users();
foreach ( $blogusers as $user ) {
eme_send_mail($subject,$body, $user->email, $user->display_name, $contact_email, $contact_name);
}
}