// requires !1003225 (JavaMail)

import javax.mail.*;
import javax.mail.PasswordAuthentication;
import javax.mail.internet.*;

static Session gmailSendSession(fS user, S pass) {
  if (pass == null) pass = findGMailPassword(user);
  final S _pass = pass;

	new Properties props;
	props.put("mail.smtp.auth", "true");
	props.put("mail.smtp.starttls.enable", "true");
	props.put("mail.smtp.host", "smtp.gmail.com");
	props.put("mail.smtp.port", "587");

	ret Session.getInstance(props,
	  new javax.mail.Authenticator() {
		protected PasswordAuthentication getPasswordAuthentication() {
			return new PasswordAuthentication(user, _pass);
		}
	});
}

Began life as a copy of #1003227