Checking if a mailbox is valid using Exchange Management Shell

In some scenarios we need to check if a mailbox database is valid on Exchange Server, this kind of validation is useful when migrating/transitioning mailboxes.


In order to validate mailboxes we can use an if clause to validate if the mailbox exists or not in the environment, and based on that we provide a brief description. The following cmdlet can be used.

$users = Import-csv File.csv

$users| foreach { if (-not (Get-mailbox $_.Alias -ErrorAction silentlycontinue)) {write-host $_.Alias ” does not exist! Please correct it! “} else {write-host $_.Alias ” exists”} }