You may want to take this up on the provider board. Another example though of why its a so risky for providers to host sessions out of their residence or even a static incall apt.

As a massage gal, I'm sure you meet lots of newbs. Just take a moment to educate him about discretion. There's many local massage providers  that no longer allow reviews because of crap like this. Giving out too many details about incall, discussing incall location, private residence vs. apt.. blah blah blah. Too much information doesn't help anyone except LE to bust your ass.
Also, you may not want to offer your incall address via email. That might be a great time to pick up the phone and offer directions.
Getting upset is natural. Just turn it into a teaching moment and then he will be a better hobbyist for it.
Best of luck to you!

Let's clarify something here. Providers are always passing hobbyist's personal information around and most of the abusers of personal info are providers, not hobbyists. In addition, providers are posting personal information of hobbyists on public blacklists every day for minor offenses.

What this guy did was dumb, so don't see him. So what do you mean by "should I do anything else"?

I don't think there is anything more you can do. You have pointed out the foolishness. It is up to them to learn the lesson.

I am unsure who I think was more at fault in that case.

The guy screwed up, for sure. He shouldn't have sent you the information. But possibly he didn't remember everything contained in the email thread he forwarded. If so, he was negligent, but not 'malicious.' Of course, that he had saved the email thread at all makes him a bad risk if you're hoping for discretion. If clients are going to whine that providers should not save our information, which we certainly do, frequently and at length, then we owe them the same courtesy.

The woman, though, intentionally put her address in an email which is very troublesome. Emails and text messages persist forever on servers. Google, Yahoo, Comcast, et. al., respond promptly to subpoenas. If LE or an angry spouse ever come looking, her address is low hanging fruit to be plucked and used against her. When there are a couple dozen, or hundred, clients who got the same email, the risk to her becomes significant. Things like addresses should only be communicated by voice. He may write it down on a scrap of paper, but the odds of retrieving that scrap of paper a month later are pretty long.

Hopefully this was just  screw up on his part that he will learn from and not representative of how he does things.

"You just included the email chain, including address, of another provider!  I hope you learn your lesson from this well.  We are done.  Please do not contact me again."

I don't mean to be rude to a newbie, but I felt it was a serious enough offense to slap him electronically for it.  I want his lesson to be learned, but I don't think I need to spell it out for him.  I can't take the chance that he might NOT learn his lesson even if I DON'T put my address on email!

I think it could have been handled better...

What you sent to him didn't explain the problem or the change he could make... he might not understand! You should have elaborated about why you didn't like the email chain he sent and why an address could be incriminating - he should have taken it out of the email. For a newbie, a short and sour message like you sent isn't a good way to point them in the right direction, it probably scared it! Come here, newbie, newbie, newbie Lol.