Wordpress: Use Amazon SES with PHPMailer

functions.php

add_action( 'phpmailer_init', 'set_phpmailer_details' );
function set_phpmailer_details( $phpmailer ) {
    $phpmailer->isSMTP();     
    $phpmailer->Host = 'SMTP_endpoint'; //Amazon SES SMTP endpoint for your region
    $phpmailer->SMTPAuth = true;
    $phpmailer->Port = 587;
    $phpmailer->Username = 'Amazon_SES_USERNAME';
    $phpmailer->Password = 'Amazon_SES_PASSWORD';
    $phpmailer->SMTPSecure = 'tls';
    $phpmailer->From = get_option('admin_email'); //your verified email address
    $phpmailer->FromName = "Your Name";

Add in functions.php of (child)theme or use Snippets plugin.