<?php
    $name = $_POST['name'];
    $email = $_POST['email'];
    $message = $_POST['message'];
    $from = 'From: yoursite.com';
    $to = 'contact@yoursite.com';
    $subject = 'Customer Inquiry';
    $body = "From: $namen E-Mail: $emailn Message:n $message";

    if ($_POST['submit']) {
        if (mail ($to, $subject, $body, $from)) {
            echo '<p>Your message has been sent!</p>';
        } else {
            echo '<p>Something went wrong, go back and try again!</p>';
        }
    }
?>

error_reporting(-1);
ini_set('display_errors', 'On');
set_error_handler("var_dump");

$headers = array("From: from@example.com",
    "Reply-To: replyto@example.com",
    "X-Mailer: PHP/" . PHP_VERSION
);
$headers = implode("rn", $headers);
mail($to, $subject, $message, $headers);

$headers = array("From from@example.com", // missing colon
    "Reply To: replyto@example.com",      // missing hyphen
    "X-Mailer: "PHP"/" . PHP_VERSION      // bad quotes
);

$headers = array("From: $_POST[contactform_sender_email]"); // No!

$to = 'user@example.com';
// other variables ....
mail($recipient, $subject, $message, $headers); // $recipient should be $to

mail('user@example.com', $subject, $message, $headers);

<form action="send_email.php" method="POST">

ini_set("mail.log", "/tmp/mail.log");
ini_set("mail.add_x_header", TRUE);

$header = "From: noreply@example.comrn";
$header.= "MIME-Version: 1.0rn";
$header.= "Content-Type: text/html; charset=ISO-8859-1rn";
$header.= "X-Priority: 1rn";

$status = mail($to, $subject, $message, $header);

if($status)
{
    echo '<p>Your mail has been sent!</p>';
} else {
    echo '<p>Something went wrong, Please try again!</p>';
}

function send_mail($email, $recipient_name, $message='')
{
    require("phpmailer/class.phpmailer.php");

    $mail = new PHPMailer();

    $mail->CharSet="utf-8";
    $mail->IsSMTP();                                      // set mailer to use SMTP
    $mail->Host = "mail.example.com";  // specify main and backup server
    $mail->SMTPAuth = true;     // turn on SMTP authentication
    $mail->Username = "myusername";  // SMTP username
    $mail->Password = "p@ssw0rd"; // SMTP password

    $mail->From = "me@walalang.com";
    $mail->FromName = "System-Ad";
    $mail->AddAddress($email, $recipient_name);

    $mail->WordWrap = 50;                                 // set word wrap to 50 characters
    $mail->IsHTML(true);                                  // set email format to HTML (true) or plain text (false)

    $mail->Subject = "This is a Sampleenter code here Email";
    $mail->Body    = $message;
    $mail->AltBody = "This is the body in plain text for non-HTML mail clients";
    $mail->AddEmbeddedImage('images/logo.png', 'logo', 'logo.png');
    $mail->addAttachment('files/file.xlsx');

    if(!$mail->Send())
    {
       echo "Message could not be sent. <p>";
       echo "Mailer Error: " . $mail->ErrorInfo;
       exit;
    }

    echo "Message has been sent";
}

<?php
$name = $_POST['name'];
$email = $_POST['email'];
$message = $_POST['message'];
$from = 'From: yoursite.com';
$to = 'contact@yoursite.com';
$subject = 'Customer Inquiry';
$body = "From: $namen E-Mail: $emailn Message:n $message";

$headers .= "MIME-Version: 1.0rn";
$headers .= "Content-type: text/htmlrn";
$headers .= 'From: from@example.com' . "rn" .
'Reply-To: reply@example.com' . "rn" .
'X-Mailer: PHP/' . phpversion();

mail($to, $subject, $message, $headers);

$headers  = "MIME-Version: 1.0" . "rn";
$headers .= "Content-type: text/html; charset=iso-8859-1" . "rn";
$headers .= "From: ". $from. "rn";
$headers .= "Reply-To: ". $from. "rn";
$headers .= "X-Mailer: PHP/" . phpversion();
$headers .= "X-Priority: 1" . "rn";

mail('email@gmail.com', $subject, $message, $headers)

<?php
    $SmtpServer="smtp.*.*";
    $SmtpPort="2525"; //default
    $SmtpUser="***";
    $SmtpPass="***";
?>

<?php
class SMTPClient
{

    function SMTPClient ($SmtpServer, $SmtpPort, $SmtpUser, $SmtpPass, $from, $to, $subject, $body)
    {

        $this->SmtpServer = $SmtpServer;
        $this->SmtpUser = base64_encode ($SmtpUser);
        $this->SmtpPass = base64_encode ($SmtpPass);
        $this->from = $from;
        $this->to = $to;
        $this->subject = $subject;
        $this->body = $body;

        if ($SmtpPort == "")
        {
            $this->PortSMTP = 25;
        }
        else
        {
            $this->PortSMTP = $SmtpPort;
        }
    }

    function SendMail ()
    {
        $newLine = "rn";
        $headers = "MIME-Version: 1.0" . $newLine;
        $headers .= "Content-type: text/html; charset=iso-8859-1" . $newLine;

        if ($SMTPIN = fsockopen ($this->SmtpServer, $this->PortSMTP))
        {
            fputs ($SMTPIN, "EHLO ".$HTTP_HOST."rn");
            $talk["hello"] = fgets ( $SMTPIN, 1024 );
            fputs($SMTPIN, "auth loginrn");
            $talk["res"]=fgets($SMTPIN,1024);
            fputs($SMTPIN, $this->SmtpUser."rn");
            $talk["user"]=fgets($SMTPIN,1024);
            fputs($SMTPIN, $this->SmtpPass."rn");
            $talk["pass"]=fgets($SMTPIN,256);
            fputs ($SMTPIN, "MAIL FROM: <".$this->from.">rn");
            $talk["From"] = fgets ( $SMTPIN, 1024 );
            fputs ($SMTPIN, "RCPT TO: <".$this->to.">rn");
            $talk["To"] = fgets ($SMTPIN, 1024);
            fputs($SMTPIN, "DATArn");
            $talk["data"]=fgets( $SMTPIN,1024 );
            fputs($SMTPIN, "To: <".$this->to.">rnFrom: <".$this->from.">rn".$headers."nnSubject:".$this->subject."rnrnrn".$this->body."rn.rn");
            $talk["send"]=fgets($SMTPIN,256);
            //CLOSE CONNECTION AND EXIT ...
            fputs ($SMTPIN, "QUITrn");
            fclose($SMTPIN);
            //
        }
        return $talk;
    }
}
?>

<?php
include('SMTPconfig.php');
include('SMTPmail.php');
if($_SERVER["REQUEST_METHOD"] == "POST")
{
    $to = "";
    $from = $_POST['email'];
    $subject = "Enquiry";
    $body = $_POST['name'].'</br>'.$_POST['companyName'].'</br>'.$_POST['tel'].'</br>'.'<hr />'.$_POST['message'];
    $SMTPMail = new SMTPClient ($SmtpServer, $SmtpPort, $SmtpUser, $SmtpPass, $from, $to, $subject, $body);
    $SMTPChat = $SMTPMail->SendMail();
}
?>

$mail->SMTPDebug = 2;

<?php
    $name = $_POST['name'];
    $email = $_POST['email'];
    $message = $_POST['message'];
    $from = 'From: yoursite.com';
    $to = 'contact@yoursite.com';
    $subject = 'Customer Inquiry';
    $body = "From:" .$name."rn E-Mail:" .$email."rn Message:rn" .$message;

if (isset($_POST['submit']))
{
    if (mail ($to, $subject, $body, $from))
    {
        echo '<p>Your message has been sent!</p>';
    }
    else
    {
        echo '<p>Something went wrong, go back and try again!</p>';
    }
}

?>

$config = Array(
        'protocol' => 'smtp',
        'smtp_host' => 'mail.domain.com', //your smtp host
        'smtp_port' => 26, //default port smtp
        'smtp_user' => 'name@domain.com',
        'smtp_pass' => 'password',
        'mailtype' => 'html',
        'charset' => 'iso-8859-1',
        'wordwrap' => TRUE
);
$message = 'Your msg';
$this->load->library('email', $config);
$this->email->from('name@domain.com', 'Title');
$this->email->to('emaildestination@domain.com');
$this->email->subject('Header');
$this->email->message($message);

if($this->email->send())
{
   //conditional true
}

$name = $_POST['name'];
$email = $_POST['email'];
$reciver = '/* Reciver Email address */';
if (filter_var($reciver, FILTER_VALIDATE_EMAIL)) {
    $subject = $name;
    // To send HTML mail, the Content-type header must be set.
    $headers = 'MIME-Version: 1.0' . "rn";
    $headers .= 'Content-type: text/html; charset=iso-8859-1' . "rn";
    $headers .= 'From:' . $email. "rn"; // Sender's Email
    //$headers .= 'Cc:' . $email. "rn"; // Carbon copy to Sender
    $template = '<div style="padding:50px; color:white;">Hello ,<br/>'
        . '<br/><br/>'
        . 'Name:' .$name.'<br/>'
        . 'Email:' .$email.'<br/>'
        . '<br/>'
        . '</div>';
    $sendmessage = "<div style="background-color:#7E7E7E; color:white;">" . $template . "</div>";
    // Message lines should not exceed 70 characters (PHP rule), so wrap it.
    $sendmessage = wordwrap($sendmessage, 70);
    // Send mail by PHP Mail Function.
    mail($reciver, $subject, $sendmessage, $headers);
    echo "Your Query has been received, We will contact you soon.";
} else {
    echo "<span>* invalid email *</span>";
}

<?php
$to = "somebody@example.com, somebodyelse@example.com";
$subject = "HTML email";

$message = "
    <html>
    <head>
       <title>HTML email</title>
    </head>
    <body>
      <p>This email contains HTML Tags!</p>
      <table>
        <tr>
         <th>Firstname</th>
         <th>Lastname</th>
        </tr>
        <tr>
          <td>John</td>
          <td>Doe</td>
        </tr>
      </table>
    </body>
    </html>";

// Always set content-type when sending HTML email
$headers = "MIME-Version: 1.0" . "rn";
$headers .= "Content-type:text/html;charset=UTF-8" . "rn";

// More headers
$headers .= 'From: <webmaster@example.com>' . "rn";
$headers .= 'Cc: myboss@example.com' . "rn";

mail($to,$subject,$message,$headers);
?>

if ($_POST['submit']) {
    $success= mail($to, $subject, $body, $from);
    if($success)
    {
        echo '
        <p>Your message has been sent!</p>
        ';
    } else {
        echo '
        <p>Something went wrong, go back and try again!</p>
        ';
    }
}

$name = $_POST['name'];
$email = $_POST['email'];
$message = $_POST['message'];
$from = 'From: yoursite.com';
$to = 'contact@yoursite.com';
$subject = 'Customer Inquiry';
$body = "From: $namen E-Mail: $emailn Message:n $message";

require 'mail/swift_required.php';

$message = Swift_Message::newInstance()
    // The subject of your email
    ->setSubject('Jane Doe sends you a message')
    // The from address(es)
    ->setFrom(array('jane.doe@gmail.com' => 'Jane Doe'))
    // The to address(es)
    ->setTo(array('frank.stevens@gmail.com' => 'Frank Stevens'))
    // Here, you put the content of your email
    ->setBody('<h3>New message</h3><p>Here goes the rest of my message</p>', 'text/html');

if (Swift_Mailer::newInstance(Swift_MailTransport::newInstance())->send($message)) {
    echo json_encode([
        "status" => "OK",
        "message" => 'Your message has been sent!'
    ], JSON_PRETTY_PRINT);
} else {
    echo json_encode([
        "status" => "error",
        "message" => 'Oops! Something went wrong!'
    ], JSON_PRETTY_PRINT);
}

sudo apt-get install sendmail

require_once 'PHPMailer/PHPMailer.php';
require_once '/servicios/PHPMailer/SMTP.php';
require_once '/servicios/PHPMailer/Exception.php';

$mail = new PHPMailerPHPMailerPHPMailer(true);
try {
       //Server settings
       $mail->SMTPDebug = 0;
       $mail->isSMTP();
       $mail->Host = 'smtp.gmail.com';
       $mail->SMTPAuth = true;
       $mail->Username = 'correo@gmail.com';
       $mail->Password = 'contrasenia';
       $mail->SMTPSecure = 'ssl';
       $mail->Port = 465;

       //Recipients
       $mail->setFrom('correo@gmail.com', 'my name');
       $mail->addAddress('destination@correo.com');

       //Attachments
       $mail->addAttachment('optional file');         // Add files, is optional

       //Content
       $mail->isHTML(true);// Set email format to HTML
       $mail->Subject = utf8_decode("subject");
       $mail->Body    = utf8_decode("mail content");
       $mail->AltBody = '';
       $mail->send();
     }
     catch (Exception $e){
        $error = $mail->ErrorInfo;
     }

From: myapp@example.com
To: mymail@example.com
Subject: Test mail via sendmail.

Text body.

root=mymail@example.com
mailhub=smtp.yandex.ru:465
FromLineOverride=YES
UseTLS=YES
AuthUser=abcde@yandex.ru
AuthPass=password

<?php
    $to      = 'nobody@example.com';
    $subject = 'the subject';
    $message = 'hello';
    $headers = 'From: webmaster@example.com' . "rn" .
        'Reply-To: webmaster@example.com' . "rn" .
        'X-Mailer: PHP/' . phpversion();

    mail($to, $subject, $message, $headers);
?>

include "libmail.php";
$m = new Mail(); // create the mail
$m->From( $_POST['form'] );
$m->To( $_POST['to'] );
$m->Subject( $_POST['subject'] );
$m->Body( $_POST['body'] );
$m->Cc( $_POST['cc']);
$m->Priority(4);
//  attach a file of type image/gif to be displayed in the message if possible
$m->Attach( "/home/leo/toto.gif", "image/gif", "inline" );
$m->Send(); // send the mail
echo "Mail was sent:"
echo $m->Get(); // show the mail source

[mail function]
sendmail_path=/usr/sbin/sendmail -t -i
; (Other directives are mostly windows)

su -                                        # Install as user 'root'
dpkg --list                                 # Is install necessary?
apt-get install sendmail sendmail-cf m4     # Note multiple package selection
sendmailconfig                              # Respond all 'Y' for new install

which sendmail                              # /usr/sbin/sendmail
which sendmailconfig                        # /usr/sbin/sendmailconfig
man sendmail                                # Documentation
systemctl restart sendmail                  # As and when required

echo "Subject: sendmail test" | sendmail -v <yourEmail>@gmail.com

error_reporting(E_ALL);

<?php
use PHPMailerPHPMailerPHPMailer;
require 'PHPMailer.php';
require 'SMTP.php';
require 'Exception.php';
$name=$_POST['name'];
$mailid=$_POST['mail'];
$mail = new PHPMailer;
$mail->IsSMTP();
$mail->SMTPDebug = 0;                               // Set mailer to use SMTP
$mail->Host = 'smtp.gmail.com';              // Specify main and backup server
$mail->Port = 587;                                    // Set the SMTP port
$mail->SMTPAuth = true;                         // Enable SMTP authentication
$mail->Username = 'someone@gmail.com';               // SMTP username
$mail->Password = 'password';                  // SMTP password
$mail->SMTPSecure = 'tls';          // Enable encryption, 'ssl' also accepted

$mail->From = 'someone@gmail.com';
$mail->FromName = 'name';
$mail->AddAddress($mailid,$name);               // Name is optional
$mail->IsHTML(true);                                  // Set email format to HTML
$mail->Subject = 'Here is the subject';
$mail->Body    = 'Here is your message' ;
$mail->AltBody = 'This is the body in plain text for non-HTML mail clients';
if(!$mail->Send()) {
   echo 'Message could not be sent.';
   echo 'Mailer Error: ' . $mail->ErrorInfo;
   exit;
}
echo 'Message has been sent';
?>

<?php
    $name = $_POST['name'];
    $email = $_POST['email'];
    $message = $_POST['message'];

    $header ="
Content-Type: text/html; charset=UTF-8rn
MIME-Version: 1.0rn
From: "$name" <$email>rn
Reply-To: no-reply@yoursite.comrn
X-Mailer: yoursite.com mailerrn
";

    $to = '"Contact" <contact@yoursite.com>';
    $subject = 'Customer Inquiry';
    $body =<<<EOB
<!DOCTYPE html>
<html>
    <body>
        $message
    </body>
</html>
EOB;

    if ($_POST['submit']) {
        if (mail ($to, $subject, $body, $header) !== false) {
            echo '<p>Your message has been sent!</p>';
        } else {
            echo '<p>Something went wrong, go back and try again!</p>';
        }
    }
?>

<?php

    require_once ("PHPMailer/PHPMailerAutoload.php");

    $error = array();

    //var_dump($_POST);

    $message = $_POST['a'] . '<br>';
    $message.= $_POST['b'] . '<br>';
    $message.= $_POST['c'] . '<br>';
    $message.= $_POST['d'] . '<br>';
    $message.= $_POST['e'] . '<br>';
    $message.= $_POST['f'] . '<br>';
    $message.= $_POST['g'] . '<br>';
    $message.= $_POST['h'] . '<br>';
    $message.= $_POST['i'] . '<br>';
    $message.= $_POST['j'] . '<br>';
    $message.= $_POST['k'] . '<br>';

    $subject = "Visitor Query";
    $from = "******@******.com"; // example a@b.com
    $password = '******';

    $mail = new PHPMailer();
    $body = $message;
    $mail->IsSMTP();
    $mail->SMTPAuth = true; // turn on SMTP authentication
    $mail->SMTPKeepAlive = true; // SMTP connection will not close after each email sent, reduces SMTP overhead
    $mail->SMTPDebug = 0;

    //$mail->Host = 'mail.******.com'; // sets SMTP server
    $mail->Host = 'mail.******.com'; // sets SMTP server
    $mail->SMTPSecure = 'ssl';
    $mail->Port = 465;
    //$mail->Port = 25;

    $mail->Username = $from; // SMTP username
    $mail->Password = $password; // SMTP password

    $mail->AddAddress ( "******@gmail.com" );
    $mail->AddReplyTo ( "******@gmail.com", "Team");
    $mail->Subject = $subject;
    $mail->Body = $message;
    $mail->From =  $from;
    $mail->FromName = "Visitor's Query";
    $mail->ContentType = "text/html";

    if (count($error == 0)) {

         $mail->Send();

        // echo "_________________wait_______for_______ our _______ reply  !";


    } else {

        echo $error; // show error messages
        //echo $result;
    }

    //header("location: index.php");

?>