[tyingq]

I think the mistake was using the word "block". A general purpose "email type classifier" might be useful.

No need to block the temporary email, but you might use that information for other purposes, like having it be some weight to a fraud detection system. Note, not calling it out as fraud outright, but using it as one data point among others.

[clusterman]

+1, and it all depends on how the website owners, SaaS providers, etc use it. They may choose to block or let them in with nice notifications message then block later.

I just provide the tool for those in need.