Hello Jev,
Thank you for reaching out! We do not have a report for user creation. However, you can find information on user creations and deletions in the Administrative logs. You'll find a log in line indicating the domain administrator who created the user and their IP.
You may be able to extract this information into a report as needed.
Andrea Free
SmarterTools Inc.
877-357-6278
www.smartertools.com