Filter is invalid

[knife]

I used the latest version and the filter is invalid. Did I use it wrong,
example code：

Pop3Server pop3Server = MailServer.create()
            .host(host)
            .port(995)
            .ssl(true)
            .auth(userName, userPass).debugMode(true)
            .buildPop3MailServer();

    ReceiveMailSession session = pop3Server.createSession();
    session.open();
    ReceivedEmail[] emails = session.receiveEmail(filter()
            .flag(Flags.Flag.SEEN, false)
            .subject("Hello"));

[Igor Spasić]

Hi!

This is what I used for e.g. Gmail:

		ReceivedEmail[] mails = session.receive()
			.filter(filter().flag(Flags.Flag.SEEN, false))
			.fromFolder("INBOX")
			.get();

@zhoufan1 would you be so kind to check what exactly is not working for you: the flag part of the filter or the subject? In both cases we just use underlying filter implementation.

Working with filters depends much on the target server and its capabilities. I will try to reproduce now.

[Igor Spasić]

Please see bd7a4bb - it has a test for your case.
So filters should work, it's just how your server is using them :)