$Username = "name@company.com"
$PasswordPath = "c:\scripts\password.txt"

# Read the password from the file and convert to SecureString
Write-Host "Getting password from $passwordpath"
$SecurePassword = Get-Content $PasswordPath | ConvertTo-SecureString

# Build a Credential Object from the password file and the $username constant
$Credential = New-Object System.Management.Automation.PSCredential -ArgumentList $Username, $SecurePassword

# Open a session to O365
$O365Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $Credential -Authentication Basic -AllowRedirection
import-pssession $O365session

# Recurse through the Projects Public Folder and mail-enable those that aren't currently mail enabled, and mail-disable the top level folders.

$folders = get-publicfolder "\TEST" -recurse -resultsize unlimited

foreach($folder in $folders)
{
    $owners = Get-PublicFolderClientPermission -identity $folder.identity | ? {$_.accessrights -eq "Owner" }
    foreach($owner in $owners)
    {
        Remove-PublicFolderClientPermission -Identity $folder.identity -user "$($owner.user)" -confirm:$false
        Add-PublicFolderClientPermission -Identity $folder.identity -user "$($owner.user)" -AccessRights CreateItems,ReadItems,CreateSubfolders,FolderOwner,FolderContact,FolderVisible,EditOwnedItems,EditAllItems
    }
}

Remove-PSSession $O365Session