I've been using Yahoo for more than a decade and mostly I felt satisfied with the quality of your services, but recently something has gone in the very wrong way. The Block senders feature doesn't work in the Spam folder, which was clearly working until a month ago. I also encountered that during my holiday abroad I wasn't able to log in to check my emails due to Unknown error. The support was also unavailable to me, which is more than infuriating. Yahoo please get your stuff together and work as supposed. Thank you in advance!