<?php $to = "****"; $message = "Hello, world!"; $topic = "HELLO, WORLD!"; mail($to, $topic, $message ); ?> [mail function] smtp = localhost smtp_port = 25 sendmail_path = "\"C:\xampp\sendmail\sendmail.exe\" -t" [sendmail] smtp_server = smtp.google.com smtp_port = 587 auth_username = **** auth_password = **** [error.log: 18.11.19 20:35:29 : Message is missing sender's address] what do guys help