Send email from your website with SMTP

SMTP hosting is for sending automated mail — password resets, order confirmations, contact-form messages — reliably and authenticated.

Your credentials

From your SMTP service details: host, port, username, password and the encryption type (SSL/TLS or STARTTLS).

WordPress

Install an SMTP plugin (for example WP Mail SMTP or FluentSMTP), choose Other SMTP and paste the credentials. Send the built-in test email.

PHP (PHPMailer)

$mail->isSMTP();
$mail->Host = 'SMTP_HOST';
$mail->SMTPAuth = true;
$mail->Username = 'SMTP_USER';
$mail->Password = 'SMTP_PASSWORD';
$mail->SMTPSecure = PHPMailer::ENCRYPTION_SMTPS;
$mail->Port = 465;

Node.js (Nodemailer)

const transporter = nodemailer.createTransport({
  host: 'SMTP_HOST',
  port: 465,
  secure: true,
  auth: { user: 'SMTP_USER', pass: 'SMTP_PASSWORD' },
});

Keep credentials in environment variables, not in code.

Good practice

• Send from an address on your own domain and set up SPF, DKIM and DMARC.
• SMTP hosting is for transactional mail, not bulk marketing blasts.
• Watch bounce rates and remove invalid addresses.

If mail lands in spam see Why your emails go to spam.