is there any software that can check email addreses? but for example to check if email is active, i mean is expired, unexistent or active
have you tried google? sounds like a program that would've been programmed ages ago due to it's simplicity. shouldn't be too expensive to be custom made either. if you can't find anything and wouldn't mind paying I know a couple programmers who could have you covered.
There are bulk email checker tools but those aren't free, for example : http://www.verifyemailaddress.org/bulk-email-verification.html .
One more thing i have noticed in pas few months, verifyemailaddress & Email-Checkker, Both of them not work properly some times, one the id is valid both of them shows error on ID. so its much hard to trust on them and either to lose a email id