I am in two minds about this.

On one hand, I like the sentiment of helping a fellow human being, and considering the age of said software, the extent of the potential use base and the fact that you can no longer buy it legally anyway, I would not care too much about the morality of distributing commercial software without the copyright owner's consent.

On the other hand, you have just sent such software and revealed your email address to a new user after his/her first post. You know absolutely nothing about this new user. He/she may be a scammer who is only after your email. Or a mole trying to trick you into a legally grey area.

I am sure he/she is none of those things but we do not know that. 99.9999% of strangers are nice people but my parents still taught me not to talk to strangers when I was a kid.