PHP

wordpress PHPMailer config

add_action( 'phpmailer_init', 'setup_phpmailer_init' );
function setup_phpmailer_init( $phpmailer ) {
    $phpmailer->Host = 'HOSTNAME'; // for example, smtp.mailtrap.io
    $phpmailer->Port = 587; // set the appropriate port: 465, 2525, etc.
    $phpmailer->Username = 'YOURUSERNAME'; // your SMTP username
    $phpmailer->Password = 'YOURPASSWORD'; // your SMTP password
    $phpmailer->SMTPAuth = true;
    $phpmailer->SMTPSecure = 'tls'; // preferable but optional
    $phpmailer->IsSMTP();

phpmailer for wordpress

function phpmailer_example( $phpmailer ) {
    $phpmailer->isSMTP();     
    $phpmailer->Host = 'smtp.example.com';
    $phpmailer->SMTPAuth = true; // Ask it to use authenticate using the Username and Password properties
    $phpmailer->Port = 25;
    $phpmailer->Username = 'yourusername';
    $phpmailer->Password = 'yourpassword';

    // Additional settings…
    $phpmailer->SMTPSecure = 'tls'; // Choose 'ssl' for SMTPS on port 465, or 'tls' for SMTP+STARTTLS on port 25 or 587
    $phpmailer->From = "you@yourdomail.com";
    $phpmailer->FromName = "Your Name";
}
add_action( 'phpmailer_init', 'phpmailer_example' );