christof1337

You can use this in functions.php:

// Function to change email address
functionwpb_sender_email( $original_email_address) {
    return'tim.smith@example.com';
}

// Function to change sender name
functionwpb_sender_name( $original_email_from) {
    return'Tim Smith';
}

// Hooking up our functions to WordPress filters
add_filter( 'wp_mail_from', 'wpb_sender_email');
add_filter( 'wp_mail_from_name', 'wpb_sender_name');