[JustGotHere]

Question to web site owners: do you block these kind of domains from registering to your websites?

[sundiver]

There are reasons to not block these emails and there are good reasons to block them (but you better not admit that on HN if you do). Number 1 reason to reject is: these users never (99.99%) become customers.

That said: http://cleanli.st

An API (beta) to validate email addresses. It knows and dynamically detects thousands of dispoable email domains (including all mailinator domains).

[j_s]

Of course there are some that do! But admitting that here isn't appreciated:

https://news.ycombinator.com/item?id=4969545