Email Punchbag?

I just unsubscribed from the list of someone I am a customer of. It is quite likely I will also unsubscribe from their membership soon as well.

They thoughfully provided a feedback form on the unsubscription page.

Google are killing the future of RSS

An RSS feed which you subscribe to is your personal subscription to a service, just like email.

A private subscription service for text, audio and video content, even involving a paid subscription fee has been possible for more than a year, based upon RSS.