code: public GreenMailConfiguration withUser(final String email, final String login, final String password) {
          this.usersToCreate.add(new UserBean(email, login, password));
          return this;
      }
docs: The given {@link com.icegreen.greenmail.user.GreenMailUser} will be created when servers will start.
  
  @param email Email address
  @param login Login name of user
  @param password Password of user that belongs to login name
  @return Modified configuration