This is short an sweet. By default, WordPress email notification address looks like WordPress@yoursitename.com.
If you want to use the site’s real email address and name for system notification to you or user add the code below to your theme’s functions.php file. The fist 3 lines will modify the default email address and the next will change the default name to your site’s name.
//Use the admin email for emails function change_mail_from( ){ return get_bloginfo( 'admin_email' ); }add_filter('wp_mail_from', 'change_mail_from', 100 ); //Use the site name for emails function change_mail_from_name( ){ return get_bloginfo( 'name' ); }add_filter('wp_mail_from_name', 'change_mail_from_name', 100 );