!include once #1015973 // JavaMail

import com.sun.mail.imap.IMAPMessage;

static Folder gmailDefaultFolder() {
  ret gmailDefaultFolder(gmailDefaultUser());
}

static Folder gmailDefaultFolder(S user) {
  ret gmailDefaultFolder(user, findGMailPassword(user));
}
  
static Folder gmailDefaultFolder(S user, S pass) ctex {
  new Properties props;
  props.setProperty("mail.store.protocol", "imaps");

  Session session = Session.getInstance(props, null);
  
  Store store = session.getStore();
  store.connect("imap.gmail.com", user, pass);
  
  ret store.getDefaultFolder();
}

Began life as a copy of #1003300