To send form mail using an SMTP relay server, you’ll typically need to configure your email script or application to use the SMTP server’s settings. Below are general steps that you can follow:

1. Choose an SMTP Relay Service:

Select an SMTP relay service. Popular choices include SendGrid, SMTP.com, or your email provider’s SMTP service.

2. Obtain SMTP Relay Server Information:

• SMTP Server Address: This is the address of the SMTP relay server. It’s provided by your chosen SMTP relay service.
• SMTP Port: Common ports are 25, 587 (for TLS/STARTTLS), or 465 (for SSL).
• Username and Password: You may need a username and password to authenticate with the SMTP relay server.

3. Update Your Form Mail Script or Application:

Adjust your form mail script or application to include the SMTP relay server settings. Below is a basic example in PHP using the PHPMailer library:

php
// Include PHPMailer library
require ‘path/to/PHPMailerAutoload.php’;

// Create a new PHPMailer instance
$mail = new PHPMailer;

// Set the SMTP settings
$mail->isSMTP();
$mail->Host = ‘your-smtp-server.com’;
$mail->SMTPAuth = true;
$mail->Username = ‘your-smtp-username’;
$mail->Password = ‘your-smtp-password’;
$mail->SMTPSecure = ‘tls’; // Use ‘tls’ or ‘ssl’
$mail->Port = 587; // Use the appropriate port

// Set other email settings
$mail->setFrom(‘your-email@example.com’, ‘Your Name’);
$mail->addAddress(‘recipient@example.com’, ‘Recipient Name’);
$mail->Subject = ‘Subject of the Email’;
$mail->Body = ‘Body of the Email’;

// Send the email
if (!$mail->send()) {
echo ‘Mailer Error: ‘ . $mail->ErrorInfo;
} else {
echo ‘Message sent!’;
}