DLL val_AddMessageLine example:

#INCLUDE DLLdefines100.js

var nInfo = new netInfo();
var Handle = nInfo.sessionID:
var ErrVal = EmailCmd(Handle,val_NewEmail,"");
if (ErrVal >= 0) {
  SetDebugOn();
  EmailCmd(Handle,val_SetMailServer,"mail.mycompany.com");
  ...
  EmailCmd(Handle,val_AddMessageLine,"Welcome to EmailCo.");
  ...