John N. Alegre wrote:
> Is there any Ruby package that will check a input email for validity?

I don't think this is possible in any language as the RFC basically says 
anything with an '@' in it _might_ be a vaild email address :) I think 
there was a Perl library that attempted to do this here:

http://ex-parrot.com/~pdw/Mail-RFC822-Address.html

But, even it is not 100%... can you grok that RE :) I can't!

Best of Luck!
Brad