the email button is not a submit button, it is a link surrounding a form button element, this will not submit the form:
<a href="receipt.php?consignor_id=&init_date=&report=true"><input name="Button" type="button" id="submit" value="Email"></a>
set the email button to be a submit button with no link:
<input name="Button" type="submit" id="submit" value="Email">