log_monitor/config/sys.config

[
  { log_monitor, 
    [
      {logfiles, ["/tmp/lines.log"]},
      {email_config,
        [
          {sender, "me@example.com"},
          {default_receiver, "salvini.fabio001@gmail.com"},
          {relay, "smtp.fabiosalvinii.com"},
          {username, "salvini.fabio001@gmail.com"},
          {password, ""}
        ]
      }
    ]
  }
].