#強制設定寄件人

vi ./wp-includes/functions.php

add_filter( 'wp_mail_from', 'sender_email' );
add_filter( 'wp_mail_from_name', 'sender_name' );

function sender_email( $default_sender_address ) {
return 'wordpress@show-gift.com';
}

function sender_name( $original_sender_name ) {
return 'wordpress@show-gift.com';
}