Unfortunately it is not possible for him to reply to all emails as he points out in his FAQ:
"I receive many emails, and although I try to read them all, and I like hearing about how mIRC or IRC has a played a part in someone's life, or about how it's being used, it just isn't possible for me to reply to every email."I really can't speak for him though, if he didn't reply then it could be that he missed your emails, or that he doesn't want to give you permission. Also, he has some "confirminator" system blocking certain email domains from emailing him. When you email him, you get sent an email by the Confirminator with a link you need to follow and confirm your email address. I don't know how long he's had this, but if it he had it when you emailed him perhaps you have a junk mail filter blocking the email, or you too missed it.
All I can suggest, if he doesn't reply here, is contacting him once again

Regards,