var Command1 = "mai";
  var Command2 = "lto:";
  var Username1 = "na";
  var Username2 = "sa";
  var Hostname1 = "neil-o";
  var Hostname2 = "nline.com";
  var Mailcommand = Command1 + Command2 + Username1 + Username2 + "@" + Hostname1 + Hostname2