Thanks for that, I’ve taken a look at the link. This seems pretty explanatory:
add_action( 'wpcf7_before_send_mail', 'my_conversion' );
function my_conversion( $cf7 )
{
$email = $cf7->posted_data["your-email"];
$name = $cf7->posted_data["your-name"];
insert_newsletter_subscriber($email, $name);
}
So am I right to think this works as when the user hits send, it will activate the hook and run function my_conversion. And then, the email will get sent as per usual?