new feature: change email status without having to log in

[dwenaus]

let's say someone is receiving emails via our plugin, but they can't seem to log in, they will continue to receive those emails and have no way to cancel them. It would be nice if we could add a way for people to change their subscription level via a link in the email, and secure it using a generated hash thingamajiggy, so they can unsubscribe, or increase their subscription with one click. Anyone interested...? R-a-y? :)

Is there a kickstarter type system for open source project where the community can choose to fund this type of development depending on their own needs? CiviCRM does this, and it seems to work. Having this for all WP plugins would be awesome.