PHPMailer\PHPMailer

PHPMailer::smtpSend │ protected │ WP 1.0

Send mail via SMTP. Returns false if there is a bad MAIL FROM, RCPT, or DATA input.

Method of the class: PHPMailer{}

No Hooks.

Returns

true|false.

Usage

// protected - for code of main (parent) or child class
$result = $this->smtpSend( $header, $body );

$header(string) (required)

The message headers.

$body(string) (required)

The message body.

Notes

• See: PHPMailer::setSMTPInstance() to use a different class.

PHPMailer::smtpSend() PHPMailer::smtpSend code ^{WP 6.8.3}

protected function smtpSend($header, $body)
{
    $header = static::stripTrailingWSP($header) . static::$LE . static::$LE;
    $bad_rcpt = [];
    if (!$this->smtpConnect($this->SMTPOptions)) {
        throw new Exception($this->lang('smtp_connect_failed'), self::STOP_CRITICAL);
    }
    //Sender already validated in preSend()
    if ('' === $this->Sender) {
        $smtp_from = $this->From;
    } else {
        $smtp_from = $this->Sender;
    }
    if (count($this->SMTPXClient)) {
        $this->smtp->xclient($this->SMTPXClient);
    }
    if (!$this->smtp->mail($smtp_from)) {
        $this->setError($this->lang('from_failed') . $smtp_from . ' : ' . implode(',', $this->smtp->getError()));
        throw new Exception($this->ErrorInfo, self::STOP_CRITICAL);
    }

    $callbacks = [];
    //Attempt to send to all recipients
    foreach ([$this->to, $this->cc, $this->bcc] as $togroup) {
        foreach ($togroup as $to) {
            if (!$this->smtp->recipient($to[0], $this->dsn)) {
                $error = $this->smtp->getError();
                $bad_rcpt[] = ['to' => $to[0], 'error' => $error['detail']];
                $isSent = false;
            } else {
                $isSent = true;
            }

            $callbacks[] = ['issent' => $isSent, 'to' => $to[0], 'name' => $to[1]];
        }
    }

    //Only send the DATA command if we have viable recipients
    if ((count($this->all_recipients) > count($bad_rcpt)) && !$this->smtp->data($header . $body)) {
        throw new Exception($this->lang('data_not_accepted'), self::STOP_CRITICAL);
    }

    $smtp_transaction_id = $this->smtp->getLastTransactionID();

    if ($this->SMTPKeepAlive) {
        $this->smtp->reset();
    } else {
        $this->smtp->quit();
        $this->smtp->close();
    }

    foreach ($callbacks as $cb) {
        $this->doCallback(
            $cb['issent'],
            [[$cb['to'], $cb['name']]],
            [],
            [],
            $this->Subject,
            $body,
            $this->From,
            ['smtp_transaction_id' => $smtp_transaction_id]
        );
    }

    //Create error message for any bad addresses
    if (count($bad_rcpt) > 0) {
        $errstr = '';
        foreach ($bad_rcpt as $bad) {
            $errstr .= $bad['to'] . ': ' . $bad['error'];
        }
        throw new Exception($this->lang('recipients_failed') . $errstr, self::STOP_CONTINUE);
    }

    return true;
}