Reply To: Foreach loop

The pipeline is PowerShell’s primary means of streaming objects instead of holding an entire result set in memory. If that’s your goal, you’ll need to stop avoiding the pipeline completely.

That said, you can put multiple commands into a script block and invoke it like a single command, piping the results to another command (ForEach-Object, or whatever.) This accomplishes what you were trying to do:

$scriptBlock = {
    Get-MailUser
    Get-MailBox 
}

& $scriptBlock |
ForEach-Object {
    # Do something
}