mail("my@example.ru", "hello", "message hello", $headers);
ssmtp no recipients supplied - mail will not be sent
echo "Test message " | sudo ssmtp -vvv my@example.ru
mailhub=smtp.gmail.com:587
UseTLS=Yes
UseStartTLS=Yes
AuthMethod=LOGIN
AuthUser=**@gmail.com
AuthPass=**
FromLineOverride=yes