Get number of most common Microsoft Exchange resources using PowerShell.
SCRIPT:
# get number of resources and save it into variables
$Mailboxes = (Get-Mailbox -ResultSize Unlimited).count
$UserMailboxes = (Get-Mailbox -ResultSize Unlimited -RecipientTypeDetails UserMailbox).count
$RoomMailboxes = (Get-Mailbox -ResultSize Unlimited -RecipientTypeDetails RoomMailbox).count
$SharedMailboxes = (Get-Mailbox -ResultSize Unlimited -RecipientTypeDetails SharedMailbox).count
$Contacts = (Get-Contact -ResultSize Unlimited).count