I found this post, which seems to be an exact duplicate, but I can't figure out how to get the answer to work for me so I'm posting again...
TFS2010: Set up an alert that will email a member in the team when a work item is assigned to them
I want anyone (not everyone) using TFS to receive an email when they are assigned an item or when an item assigned to them changes. So, when the alert happens, the person who is currently assigned the item will receive an email.
I know I can set up this on a per-person basis with Alerts Explorer, but I can't figure out how to do this for everyone at once.
I looked at https://tfsalerts.codeplex.com/, but it looks like it's used to send alerts to groups of people...I only want to send the alert to a single relevant person (the equivalent of @Me). If this tool can do that, I'm not sure how to make it do so.