If suddenly you find that you are not able to log into your Yahoo mail account you must try to find out the reason. It is important that you deal with any problem related to your Yahoo mail account as soon as you learn about it because delaying the issue can only complicate the problem. In such situations Yahoo tech support team can be of great help and you can access quality technical assistance the right away. All you need to do is dial the toll free help line number of Yahoo customer service and get the needed assistance. The toll free help line number of Yahoo comes to the rescue of every Yahoo mail user whenever they are faced with any difficult situation related to Yahoo mail account.