This question already has an answer here:
Mail::send(['html' => 'emailtemplate'], $dataCustomer, function ($m) use ($input)
{
$m->from('quotes@email.net', 'Mr. Foot');
$m->to($_POST['email'])->subject('Mr Foot Thanks You');
</div>
You need to add additional headers for the Bcc field.
http://php.net/manual/en/function.mail.php
See this related Stackoverflow question.
Edit: Looks like you are using the Laravel framework. To add a bcc, you can call:
$m->bcc('address@domain.com', 'Name');
Here's the documentation.