How to Cleanup Gmail

Slight detour from the pythonic nature of this blog. I'm almost out of disk space at work, and most of the email is unnecessary. So, I wrote the java class below to delete all mail older the a month. You'll need javamail on your classpath and a compiled class of this:

package us.d8u;
import java.util.Calendar;
import java.util.Date;
import java.util.Properties;
import javax.mail.Authenticator;
import javax.mail.Flags;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Store;

public class CleanupGmail {
    private static Session session = null;
    public static void cleanup(String folderName) throws NoSuchProviderException, MessagingException {
	Store store = session.getStore("imaps");
	if (!store.isConnected()) {
	    store.connect(System.getProperty("mail.imaps.host"), System.getProperty("mail.imaps.user"), System.getProperty("mail.imaps.password"));
	}
	Folder inbox = store.getFolder(folderName);
	inbox.open(Folder.READ_WRITE);
	Message messages[] = inbox.getMessages();
	for (Message message : messages) {
	    Calendar c = Calendar.getInstance();
	    c.add(Calendar.MONTH, -1);
	    Date receivedDate = message.getReceivedDate();
	    if (receivedDate.before(c.getTime())) {
		Flags deleted = new Flags(Flags.Flag.DELETED);
		inbox.setFlags(messages, deleted, true);
	    }
	}
	inbox.close(true);
    }
    public static void main(String[] args) {
	final Properties props = System.getProperties();
	props.setProperty("mail.imaps.host", "imap.gmail.com");
	props.setProperty("mail.imaps.port", "993");
	props.setProperty("mail.imaps.connectiontimeout", "5000");
	props.setProperty("mail.imaps.timeout", "5000");
	if (props.getProperty("mail.imaps.user") == null) {
	    props.setProperty("mail.imaps.user", args[0]);
	}
	if (props.getProperty("mail.imaps.password") == null) {
	    props.setProperty("mail.imaps.password", args[1]);
	}g
	try {
	    session = Session.getDefaultInstance(props, new Authenticator() {
		    public PasswordAuthentication getPasswordAuthentication() {
			return new PasswordAuthentication(props.getProperty("mail.imaps.user"), props.getProperty("mail.imaps.password"));
		    }
			
		});
	    cleanup("[Gmail]/All Mail");
	} catch (NoSuchProviderException e) {.
	    e.printStackTrace();
	    System.exit(1);
	} catch (MessagingException e) {
	    e.printStackTrace();
	    System.exit(2);
	}
    }
}
	    

You run it using java -jar ~/bin/CleanupGmail.jar -Dmail.imaps.user=<your gmail username> -Dmail.imaps.password=<your gmail password>. Personally, I've just stuck it in a monthly cron job.