Get all users forwardto or redirectto inbox rules

Get-ForwardRules.ps1

# evidently there is an entirely different area in o365 where you can do the same thing as an inbox rule but it's not an inbox rule
# Get-Mailbox -ResultSize Unlimited | select WindowsEmailAddress,AccountDisabled,DeliverToMailboxAndForward,ForwardingAddress,ForwardingSmtpAddress | Export-Csv -NoTypeInformation Forward.csv

# get msol creds for reconnecting
$creds = Get-Credential

# First get a list of all users from on prem AD so it doesn't time out
Get-ADUser -Properties emailaddress -Filter {(Enabled -eq $True) -and (ProxyAddresses -like 'SMTP*')} | Export-Csv -NoTypeInformation Users.csv

# write the header
[PSCustomObject]@{
  'EmailAddress' = '';
  'RuleName' = '';
  'ForwardTo' = '';
  'RedirectTo' = '';
} | ConvertTo-Csv -NoTypeInformation | Select -First 1 | Out-File -Encoding 'Default' -Append Rules.csv;

$n = 0
Import-Csv Users.csv | ForEach {
  $User = $_
  if($User.EmailAddress){
    # connect to exchange
    if($n -eq 0){
      ((Get-Date).toString("yyyy-MM-dd HH:mm:ss") + " Connecting to Remote Exchange")
      $Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri "https://ps.outlook.com/powershell" -Credential $creds -Authentication Basic -AllowRedirection
      Import-PSSession $Session
    }

    ((Get-Date).toString("yyyy-MM-dd HH:mm:ss") + " Working on " + $User.EmailAddress)
    $Rules = Get-InboxRule -Mailbox $User.EmailAddress | Where {($_.Enabled -eq $True) -and (($_.ForwardTo -ne $null) -or ($_.RedirectTo -ne $null))}
    if(($Rules | measure).count -gt 0){
      $Rules | ForEach {
        ((Get-Date).toString("yyyy-MM-dd HH:mm:ss") + " Writing rule " + $Rule.Name + " for " + $User.EmailAddress)
        $Rule = $_
        [PSCustomObject]@{
          'EmailAddress' = $User.EmailAddress;
          'RuleName' = $Rule.Name;
          'ForwardTo' = $Rule.ForwardTo;
          'RedirectTo' = $Rule.RedirectTo;
        } | ConvertTo-Csv -NoTypeInformation | Select -Last 1 | Out-File -Encoding 'Default' -Append Rules.csv;
      }
    }
    $n = ($n + 1)
    # reconnect to exchange every 100 users
    if($n -eq 100){
      $n = 0
      Remove-PSSession $Session
    }
  }
}