Change how WordPress sends emails

custom-wp-email.php

<?php
 
/**
 * Plugin Name: Custom WordPress Email
 * Plugin URI: https://gist.github.com/4137632
 * Description: Change how WordPress sends emails
 * Author: Shea Bunge
 * Author URI: http://bungeshea.com
 * Version: 1.0
 */

// set email type to html

function change_mail_type() {
  return 'text/html';
}
add_filter( 'wp_mail_content_type', 'change_mail_type' );

// set email from address

function change_mail_from() {
	return get_bloginfo( 'admin_email' );
}
add_filter( 'wp_mail_from', 'change_mail_from' );


// set email from name

function change_from_name() {
	return get_bloginfo( 'name' );
}
add_filter( 'wp_mail_from_name', 'change_from_name' );