<?php if(isset($_POST['send'])){
$servername = "localhost";
$username = "username ";
$password = "password ";
$dbname = "db";

$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT * FROM table1 where id in (1, 3, 2, 4)";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
while($row = $result->fetch_assoc()) {

$name = $row["title"];

}}else {}
$conn->close();
}
?>

<?php if(isset($_POST['send'])){
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "db";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT email, subid FROM table2";
$result = $conn->query($sql);

if ($result->num_rows > 0) {while($row = $result->fetch_assoc()){

$subid = $row["subid"];

$email_to = $row["email"];
$subject = "Newsletter | OnlineDealsIndia";
$header = "From: OnlineDealsIndia <noreply@onlinedealsindia.in>rn";
$header.= "MIME-Version: 1.0rn";
$header.= "Content-Type: text/html; charset=utf-8rn";
$header.= "X-Priority: 1rn";

$message = '<h3>Todays Top Deals!</h3><hr>

<li>' .$name. '</li>

<a href="http://www.onlinedealsindia.in/newsletter/unsubscribe/?subid=' .$subid. '">Click Here</a> To Unsubscribe
';
mail($email_to,$subject,$message,$header);
}}else {}

$conn->close();
}
?>