Actions allows developers to embed quick actions to allow users to execute directly from their inbox in response to an email. For example, add a movie to a queue, review a movie already watched or check in to a flight.

I checked the API and the most flexible one is the Go-To Action because it allows the email to start a complex process directly from an email. But I love the power of the simplicity of the One Click Actions.

Wonder if these will be supported by other email clients.