Your template contains /assets/php folder with submit.php for contact form and newsletter.php for newsletter subscription. Also includes PHPMailer library files: Exception.php, PHPMailer.php, and SMTP.php.

Login to your Google Account, go to Security tab, click on 2-Step Verification, click Get Started, enter your password, verify your phone number, and enter the verification code to enable it.

After enabling 2-Step Verification, go to App passwords under Signing in to Google. Select 'Mail' from Select app and 'Other' from Select device, give it a name like 'Contact Form', and click Generate. Copy the 16-character code.

Open /assets/php/submit.php. Update Username with your Gmail ID, Password with your 16-character App Password, addAddress with the email where you want to receive form submissions, and setFrom with your sender email and name.

Change the Subject line to something like '(YourSite) New Contact Form Message'. You can also customize the email body template and add CC/BCC recipients if needed.

Open /assets/php/newsletter.php and apply the same SMTP settings - Username, Password, addAddress, and setFrom. This ensures your newsletter subscription form also works properly.

Run your site on localhost using XAMPP or upload to live server. Fill out the contact form and submit. Check your recipient email inbox. The email should arrive within seconds using SMTP.