List Disabled User Accounts with Mailboxes

I'm currently working with a large organization where they've lost track of mailbox removals when accounts are disabled. They keep disabled accounts for an extended period of time after users leave. So, some disabled accounts are years old and still have a mailbox.

We're going through and cleaning up right now. So, we wanted a list of disabled user accounts with an Exchange Mailbox. However, since resource mailboxes have a disabled user account, we need to exclude those. It's a nice easy one line of PowerShell:
Get-Mailbox -Filter {ExchangeUserAccountControl -eq "AccountDisabled" -and IsResource -eq $false} -ResultSize unlimited | export-csv C:\temp\DisabledWMailbox.csv

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