Office 365 - Powershell to get user calendar default permissions

I got this much so far. This will fetch all user mailboxes. I also need it to only report user calendars that have default accessrights set to none. I can't seem to find the syntax to filter the results.

Get-Mailbox -ResultSize Unlimited | Where-Object {$_.ResourceType -eq 'User'}
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bgcpcAuthor Commented:
For anyone intereseted, I got an answer from the Office 365 community forums.

$mailboxes = Get-Mailbox -ResultSize Unlimited | Where-Object {$_.RecipientTypeDetails -eq 'UserMailbox'}

Foreach ($mailbox in $mailboxes)


$MailboxPerm = Get-MailboxFolderPermission -Identity ($mailbox.Alias+":\Calendar") -User Default

write-host ($mailbox.Alias + " is set to " + $MailboxPerm.AccessRights)

if ($MailboxPerm.AccessRights -eq "FolderVisible")


write-host ("`tChanging " + $mailbox.Alias)

Set-MailboxFolderPermission –Identity ($mailbox.Alias+":\Calendar") -User Default -Accessrights AvailabilityOnly



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