CHANGE WORDPRESS@ EMAIL DEFAULT TO CUSTOM

 // Change default WordPress email address

add_filter('wp_mail_from', 'new_mail_from');

add_filter('wp_mail_from_name', 'new_mail_from_name');

 

function new_mail_from($old) {

return 'yourname@yourdomain.com';

}

function new_mail_from_name($old) {

return 'Your Name';

}

now install this plugin Stop WP Emails Going to Spam