True, he didn't comment on the emails themselves, but he slammed her pretty hard on maintaining her secret, illegal server, which is part and parcel of the same issue.
It's not over for her. The email server issue is going to continue coming up until election day, either during the debates, or in Trump campaign commercials. He's not going to let her get away with it.
The problem was deliberately keeping classified information in an insecure manner that could very easily have been compromised, and was. The problem was further compounded by deleting these documents illegally.
To keep calling it email makes it sound far too trivial.
I also hope next time the Clinton foundation scandals are brought up too, by Trump if no one else. I think a good opportunity would have been when Hillary accused him of not paying taxes. At least he didn’t make his money off a so called charity with non-profit status that doesn’t pay taxes and spent over 90% of their money on administrative (Clinton and friends) “expenses”.