Blockrs beta will be free of charge for everybody, just register to get your API key and you are ready to start block disposable emails.
Blockrs offer a very easy Json REST API you can use to discover if a domain is disposable or not.
Blockrs will be always available for you with a fast and robust architecture you can send it all the requests you need.
Blockrs is a web REST API to identify if a domain email is disposable or temporary and let you take your action.