This is my script so far. It is working fine - I just want to be able to disable those protocols by default when creating the mailbox.
$mailbox=import-csv C:\Downloads\NEWBIE.CSV
ForEach ($mailbox in $mailbox) {Enable-Mailbox -Identity $Mailbox.Identity -Database $Mailbox.Database -PrimarySmtpAddress $Mailbox.PrimarySmtpAddress -ManagedFolderMailboxPolicy "90 day policy" -ManagedFolderMailboxPolicyAllowed}
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