I’m John Heisler, a Communication and Collaboration Administrator with nearly 10 years in IT. I manage about 2,000 users across two hybrid Microsoft 365 tenants, and I write a lot of PowerShell to keep that manageable.

This blog is where I share the scripts and concepts that come out of that work:

• Bulk changes and repetitive tasks in Entra ID, Active Directory, Exchange, SharePoint, and Teams
• Data gathering and reporting
• Troubleshooting mail flow, calling, and permissions
• Lessons from email and tenant migrations to Microsoft 365

Every script is also on GitHub. Test anything in a lab before running it in production.

Elsewhere

• johnjheisler.com for my main site
• Poplar Technologies for IT consulting for individuals and small to mid-size businesses
• LinkedIn
• X / Twitter

Questions or corrections? Email hello@johnjheisler.com.