I am using Yahoo USA that is without any problem. But the problem arises when I shifted (Redeligate) to Yahoo India. For existing user for small business customer care number never works. If you need support then you have to call as new user in IVR system and sometime you may get technical help but again they could not resolve the problem. You can not deactive the a/c if you have registered. They will insist to write mail to deactivate but you will never get any response. So I would recommend not to register with Yahoo India at least.