import javax.mail.search.*;
import static javax.mail.Message.RecipientType;

// find any type (To, CC, BCC)
static L<Message> listMailsTo(Folder f, S address) {
  ret listMailsTo(f, address, null);
}

static L<Message> listMailsTo(Folder f, S address, RecipientType type) ctex {
  f.open(f.READ_ONLY);
  Address a = new InternetAddress(address);
  SearchTerm term;
  if (type == null)
    term = new OrTerm(new SearchTerm[] {
      new RecipientTerm(RecipientType.TO, a),
      new RecipientTerm(RecipientType.CC, a),
      new RecipientTerm(RecipientType.BCC, a)
    });
  else
    term = new RecipientTerm(type, a);
  ret asList(f.search(term));
}

Began life as a copy of #1003948