If I’m lucky I get a csv. Most of the time it’s just a list of user names in the body of the email.
I’ve got a custom function added to the ISE that lets me copy it out of the email, and paste it into the ISE, already wrapped in the code to make it an array.
I’m not that fancy.
I use dsadd and, if needed, use Powershell to set user attributes.
I have to watch the users lists, though, because I get a few people with two last names that are not hyphenated.