If you use a POP mail client to access your yahoo mail account, and you are not able to get certain mails, the problem is because pop clients can access wheels only from your inbox and spam box. If you have your meetings filtered to different folders, you will not receive those mails through POP client. To access all mails from yahoo account through POP client, you must either give up filters or you should directly access yahoo mail account. Only then you will be able to get all the mails which are important to you .Call Yahoo customer care number which is available 24 by 7 to resolve variety of yahoo mail issues which are otherwise difficult to eliminate.