Bitrix SMTP

custom_mail.php

<?php

function custom_mail($to, $subject, $message, $additional_headers, $additional_parameters) {
    require_once(__DIR__ . '/vendor/PHPMailer/PHPMailerAutoload.php');

    /* Парсинг дополнительных заголовков в письмах. */
    $additional_headers_array = explode("\n", $additional_headers);
    $arHeaders = array();
    
    foreach ($additional_headers_array as $key => $value) {
        $arTmp = explode(':', $value);
        $arHeaders[$arTmp[0]] = $arTmp[1];
    }

    if ($arHeaders['BCC']) {
        $arHeaders['BCC'] = explode(',', trim($arHeaders['BCC']));
    }

    unset($additional_headers_array);

    /* Настройки smtp */
    $smtp = array(
        'host'     => 'smtp.yandex.ru',
        'user'     => 'testsmtp@domain.com',
        'password' => '#password#',
        'from'     => 'testsmtp@domain.com',
        'fromName' => 'SMTP From',
        'port'     => 465,
        'debug'    => 0,
        'ssl'      => true
    );

    $to = str_replace(' ','', $to);

    $mail = new PHPMailer();
    $mail->IsSMTP();
    $mail->CharSet   = 'UTF-8';
    $mail->Host      = $smtp['host'];           // SMTP server example
    $mail->SMTPDebug = $smtp['debug'];         // enables SMTP debug information (for testing)
    $mail->Timeout   = 10;
    $mail->SMTPAuth  = true;                 // enable SMTP authentication
    $mail->Port      = $smtp['port'];       // set the SMTP port for the GMAIL server
    $mail->Username  = $smtp['user'];      // SMTP account username example
    $mail->Password  = $smtp['password']; // SMTP account password example
    $mail->From      = $smtp['from'];
    $mail->FromName  = $smtp['fromName'];
    
    if ($smtp['ssl']) {
        $mail->SMTPSecure = "ssl";
    }

    $address = explode(',', $to);

    foreach ($address as $addr) {
        $mail->addAddress($addr);
    }

    if (count($arHeaders['BCC'])) {
        foreach ($arHeaders['BCC'] as $bcc_email) {
            $mail->AddBCC(trim($bcc_email));
        }
    }

    if (substr_count($additional_headers, "Content-Type: text/html")) {
        $mail->isHTML(true); // Set email format to HTML
    }

    $mail->Subject = $subject;
    $mail->Body = $message;

    if (!$mail->send()) {
        echo "Message could not be sent. <p>";
        echo "Mailer Error: " . $mail->ErrorInfo;
        $return = false;
    } else {
        $return = true;
    }

    return $return;
}