In order to prevent users from signing up with my site using a disposable email address, I want to check the email address during registration. I found many web services that offer to validate an email address against its internal disposable email domain list.
I think using this method is a very bad idea. Because of privacy concerns (or even privacy policies), you shouldn't ever expose the users email address to a third party.
I've found some public list, but neither seem to be updated:
https://gist.github.com/michenriksen/8710649
https://gist.github.com/adamloving/4401361
http://www.digitalfaq.com/forum/web-tech/5050-throwaway-email-block.html
Does anyone know a publicly available list, which is updated regularly?