Microsoft has announced that, starting today, people who earn Microsoft Rewards will be able to subscribe to Mixer channels using those points. This feature is available in the United States, United Kingdom, Australia, Ireland, New Zealand and Singapore. Other countries which support Microsoft Rewards will get this feature in early May.
Microsoft Reward points can be earned by searching with Bing, watching movies from the Microsoft Store, doing Xbox Game Pass quests or purchase items from the Microsoft Store.
A one month channel subscription will cost 3,850 Microsoft Rewards points. This will lead to a non-recurring one-month subscription to a channel of your choosing.
Microsoft has put up a nice instruction and Q&A on their website. So, if you are interested to learn more about this. Make sure to visit the official Mixer blog.