Third-Party User Management Tools

I'm looking for recommendations for third-party user management tools that can do the following:

- Identify and bulk-expire/no visibility users that are inactive for >XXX days
- Identify users with auto-forward rules
- Bulk-delete inactive accounts (from GW database only, not eDirectory accounts)
- Maybe even bulk-move inactive/expired accounts to a "dead accounts" post office?

I have an immediate mandate to clean up our environment, and I don't see how to do this in bulk with existing native tools. It's just one guy (me) versus 42 post offices and 23,000 user accounts...

Thanks!