Email subscriptions is and has always been the wrong way to go. If you want to provide a news subscription service, provide RSS. If you want to receive news about a particular service/company, subscribe to their RSS feeds. No reputations and delivery issue to handle for the provider, no subscriptions and unsubscriptions to manage for provider, can be managed locally by user. Providers have easy setup, users have full control. And RSS is supported by any half decent email client so people who like having stuff in the same interface do not have to use a different software.

What's not to like?