<?php
 
$voucher='<div>VOUCHER IMAGE COMES HERE</div>';//only group for voucher must see it
$mail_description='Here comes my mail text';
$voucherarray=array("mail1@gmail.com","mail3@gmail.com");
$mailaray=array("mail1@gmail.com","mail2@gmail.com");
$html='';
foreach($mailaray as $email){
    $html.='<div>'.$mail_description.'</div>';
 
    if(in_array($email, $voucherarray)){
        $html.=$voucher;
        echo $email.'is for voucher';
    }
    else {
        $email.'is not for voucher';
    }
    $html.='<table><tr><td></td></tr></table><div clss="footer"></div>';
}
echo $html.'<br />';
 

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