Is it possible to send validation email for those who write us using Contact us form?

[vredin]

Is it possible to send validation email for those who write us using Contact us form?

I get a lot of spam/scam emails from people who use scripts to send kink of scam offers (captcha doesn't stop them because of services like "anti-captcha". So I think its' nice to have validation of their email prior to get their message to us. This will cut part of spammers.

This is 1st part of issue.

And second - I want to filter emails from services like "10 minutes mail". My store is 2 weeks old but I already see tens of fake emails and I want to filter/score them.