so, the version of the apply.php page on your server is not the same as the one you sent me in your massage.
on the server, you are creating an array of the ccmail elements, one as a hidden element:
<input type="hidden" name="ccmail[]" value="<?php echo $row_pulllinkIn['bis_email']; ?>" id="ccmail_0" />
and then one as the checkbox.
<input type="checkbox" name="ccmail[]" value="" id="ccmail_1" />
the checkbox doesn't have a value, so it won't do anything. but the hidden element always a value.
the email is being sent the cc address because of the hidden element.
on your page i deleted the hidden element and edited the checkbox:
<input type="checkbox" name="ccmail" value="<?php echo $row_pulllinkIn['bis_email']; ?>" id="ccmail_1" />
i also had to remove the implode functions in the webassist/email/waue_apply_1.php file.