In this post, I will show you how we can send an email to multiple receivers using simple PHP script. This script also shows how we can send bulk if we have server limitation on number of emails can be sent in period of time. Many web hosting provider do not support bulk emails so I have set this script to come out of this limitation.
This Bulk Email script can send HTML email. You can also use this script to send promotional and marketing emails.
In this tutorial we will create three files. First file is HTML content of email, second file is the actual code which sends emails to multiple address one at a time and third file is allowing receivers to unsubscribe from email list.
sample.html
<p>Hello there</p> <p>This is sample email file</p> <br> <p>Thanks,</p> <p>Administrator</p>
sendmail.php
<?php
$con = mysql_connect("localhost","dbuser","dbpass"); // replace dbuser, dbpass with your db user and password
mysql_select_db("dbname", $con); // replace dbname with your database name
/*
To use this script database table must have three fields named sno, email and sub_status
*/
$query = "select sno, email from dbtable where sub_status = 'SUBSCRIBED'";
$result = mysql_query($query, $con);
$emails = array();
$sno = array();
while($row=mysql_fetch_assoc($result)){
$sno[] = $row['sno']; // this will be used to unsubscribe the user
$emails[]=$row['email']; // email id of user
}
/* you can also get email id data from CSV using below code */
//$file = file_get_contents("travel_database.csv");
//$emails = explode(",",$file);
/* count.txt is used to store current email sent number/count */
$count = file_get_contents("count.txt");
for($i=$count;$i<count($emails);$i++)
{
$to = $emails[$i];
// subject
$subject = 'Set Your Title Here';
// message
$message = file_get_contents("sample.html"); // this will get the HTML sample template sample.html
$message .= '<p><a href="http://yourdomain.com/path-to-folder/unsubscribe.php?id='.$sno[$i].'&username='.$emails[$i].'">Please click here to unsubscribe.</a></p>
</body>
</html>';
// To send HTML mail, the Content-type header must be set
$headers = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
// Additional headers
//$headers .= "To: $to" . "\r\n";
$headers .= 'From: Name <info@yourdomain.com>' . "\r\n";
//$headers .= 'Cc: sendcc@yourdomain.com' . "\r\n";
//$headers .= 'Bcc: sendbcc@yourdomain.com' . "\r\n";
// Mail it
if(mail($to, $subject, $message, $headers)) {
$file = fopen("mailsentlist.txt","a+"); // add email id to mailsentlist.txt to track the email sent
fwrite($file, $to.",\r\n");
fclose($file);
}
else
{
$file = fopen("notmailsentlist.txt","a+"); // add email to notmailsentlist.txt here which have sending email error
fwrite($file, $to.",\r\n");
fclose($file);
}
if(($i-$count)>=200) // this will send 200 mails from database per execution
{
$filec = fopen("count.txt",'w'); // store current count to count.txt
fwrite($filec, $i);
fclose($filec);
break;
}
}//for end
$filec = fopen("count.txt",'w'); // store fine count to count.txt this will be used as a start point of next execution
fwrite($filec, $i);
fclose($filec);
Replace “http://yourdomain.com/path-to-folder/” with your path to unsubscribe.php
You can set the cron job on sendmail.php on particular time frame. For example if you hosting provider support only 100 mail per hour than you can set cron job par hour and update the value here
if(($i-$count)>=100) // update this in code of sendmail.php
unsubscribe.php
<?php
$con = mysql_connect("localhost","dbuser","dbpass");
mysql_select_db("dbname", $con);
$sno = (integer)$_GET['id'];
$email = mysql_real_escape_string($_GET['username']);
$query = "update tablename set sub_status = 'UNSUBSCRIBED' where sno = $sno and email = '$email'";
mysql_query($query);
echo "You have Successfully unsubscribed. Thank you for using the service.";
Comment here if you have any queries.