If you have subscribed to newsletters or any other information source on internet then users might have received all the emails related with it. However, while dealing with the issue of why Yahoo unsubscription feature not working then you can’t enable Yahoo unsubscription feature for below-mentioned updates. Start by welcoming after signing up for Yahoo’s product or service, information on changes in privacy policy, notifications about discontinued service, emails related to changes in terms of service, and emails related to billing such as renewal and cancellation notices.