PHP Simple Correction ( PHP Expert please help to me..! )

Hear i have added 560 Email Ids into my database, but i have to send the mail at a time.
so the column is 'email', for sendig the email for that particular column of emails i have used the following script.., but it giving the message

Message delivery failed...,


What's wrong please help it is very important for me
Thanks a lotttt.

<table class="ex"> <td>

<?php
include('db_n.php');


$data = mysql_query("SELECT * FROM appsubmitn") or die(mysql_error()); 

Print "<table CLASS=b> Send Mail To All The Clients In Your Database: "; include('header.php'); ?> 




<?php
while($info = mysql_fetch_array( $data )) 
{ 
Print "<tr>";


//___________sending mail__________

$to = "info['email']";

$subject = "Hi!";

$body = "Hi,\n\nHow are you?";

if (mail($to, $subject, $body)) {

  echo("<p>Message successfully sent!</p>");

 } else {

  echo("<p>Message delivery failed...</p>");

 }


//___________end mail__________


 

Print "<td>".$info['email']. "</td>";




} 

Print "</table>"; 

?>




</td></table>

PHP:

 

It's possible that some emails aren't well formatted in which case mail() would fail.
It's also possible that you don't have a working mail system on your server.
Check your php.ini and see if a sendmail_path is set.

 

$to = "info['email']"; <--

$to = $info['email'];

 

Use $to = $info['email']; and not $to = info['email'];
And also check whether the emails are valid or not

 

Ha so all the emails were invalid because the $to variable was empty/null/whatever.
I should have seen that missing $ before info.

 

Thanks my dear friends....,

and special thanks to roopajyothi, gapz101

Yours working 100.1% thank you a lot