Where-Object match array
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How to use where-object match one of multiple values from an array. You do not have to use an array. You can just type all the values in a string separated with | between each word(s). Note : Do not have any spaces before or after the pipe character, it is an exact match.
1 2 3 | $email = @('test.com', 'foo.com', 'bar.com') get-mailbox | Where-Object { $_.ForwardingSmtpAddress -match ($email -join '|')} |