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How to Send Email from a PHP Script Using SMTP Authentication

by admin on June 29th, 2009

PHP mail() and SMTP Authentication

Part of what makes the PHP mail() function is so simple is its lack of flexibility. Most importantly and frustratingly, the stock mail() does not usually allow you to use the SMTP server of your choice, and it does not support SMTP authentication, required by many a mail server today, at all.

Fortunately, overcoming PHP’s built-in shortcomings need not be difficult, complicated or painful either. For most email uses, the free PEAR Mail package offers all the power and flexibility needed, and it authenticates with your desired outgoing mail server, too. For enhanced security, secure SSL connections are supported.

Send Email from a PHP Script Using SMTP Authentication

To connect to an outgoing SMTP server from a PHP script using SMTP authentication and send an email:

  • Make sure the PEAR Mail package is installed.
    • Typically, in particular with PHP 4 or later, this will have already been done for you. Just give it a try.
  • Adapt the example below for your needs. Make sure you change the following variables at least:
    • from: the email address from which you want the message to be sent.
    • to: the recipient’s email address and name.
    • host: your outgoing SMTP server name.
    • username: the SMTP user name (typically the same as the user name used to retrieve mail).
    • password: the password for SMTP authentication.

Sending Mail from PHP Using SMTP Authentication – Example

<?php
require_once “Mail.php”;

$from = “Sandra Sender <[email protected]>”;
$to = “Ramona Recipient <[email protected]>”;
$subject = “Hi!”;
$body = “Hi,\n\nHow are you?”;

$host = “mail.example.com”;
$username = “smtp_username”;
$password = “smtp_password”;

$headers = array (‘From’ => $from,
‘To’ => $to,
‘Subject’ => $subject);
$smtp = Mail::factory(‘smtp’,
array (‘host’ => $host,
‘auth’ => true,
‘username’ => $username,
‘password’ => $password));

$mail = $smtp->send($to, $headers, $body);

if (PEAR::isError($mail)) {
echo(“<p>” . $mail->getMessage() . “</p>”);
} else {
echo(“<p>Message successfully sent!</p>”);
}
?>

Sending Mail from PHP Using SMTP Authentication and SSL Encryption – Example

<?php
require_once “Mail.php”;

$from = “Sandra Sender <[email protected]>”;
$to = “Ramona Recipient <[email protected]>”;
$subject = “Hi!”;
$body = “Hi,\n\nHow are you?”;

$host = “ssl://mail.example.com”;
$port = “465”;
$username = “smtp_username”;
$password = “smtp_password”;

$headers = array (‘From’ => $from,
‘To’ => $to,
‘Subject’ => $subject);
$smtp = Mail::factory(‘smtp’,
array (‘host’ => $host,
‘port’ => $port,
‘auth’ => true,
‘username’ => $username,
‘password’ => $password));

$mail = $smtp->send($to, $headers, $body);

if (PEAR::isError($mail)) {
echo(“<p>” . $mail->getMessage() . “</p>”);
} else {
echo(“<p>Message successfully sent!</p>”);
}
?>

2 Comments
  1. Jason permalink

    Please help me
    I want to know how to add
    MIME-Version: 1.0

    and

    Content-type: text/html; charset=iso-8859-1

    in mentioned bwlow code

    <?php
    require_once “Mail.php”;

    $from = “Sandra Sender ”;
    $to = “Ramona Recipient ”;
    $subject = “Hi!”;
    $body = “Hi,\n\nHow are you?”;

    $host = “mail.example.com”;
    $username = “smtp_username”;
    $password = “smtp_password”;

    $headers = array (‘From’ => $from,
    ‘To’ => $to,
    ‘Subject’ => $subject);
    $smtp = Mail::factory(‘smtp’,
    array (‘host’ => $host,
    ‘auth’ => true,
    ‘username’ => $username,
    ‘password’ => $password));

    $mail = $smtp->send($to, $headers, $body);

    if (PEAR::isError($mail)) {
    echo(“” . $mail->getMessage() . “”);
    } else {
    echo(“Message successfully sent!”);
    }
    ?>

  2. admin permalink

    Sorry for the late answer . If it still helps you have to setup “Content-type” in header section bellow “$headers = array (…” line .
    e.g.:

    $headers = array (‘From’ => $from,
    ‘To’ => $to,
    ‘Subject’ => $subject);
    );
    array_push(&$headers, ‘MIME-Version: 1.0’);
    array_push(&$headers, ‘Content-Type: multipart/mixed;’);

    array_push(&$headers, ” boundary=\”{$mime_boundary}\””);

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