Email warning when mailbox size is over limit on Exchange 2010 with PowerShell Script

I had to write a PowerShell script for Exchange 2010 that sends an email to a user when his  mailbox size exceeded  1Gb. Here is  the script:

 If ((Get-PSSnapin | where {$_.Name -match "Exchange.Management"}) -eq $null)
{
Add-PSSnapin  Microsoft.Exchange.Management.PowerShell.E2010
}
$toArray=Get-MailboxServer  | Get-Mailbox | foreach-object {$email = $_.primarysmtpaddress; $_ | Get-MailboxStatistics | Where  {$_.TotalItemSize.Value.ToMB() -gt 1024 }  |   select @{ expression={$email}}}
$from="from@from.com"
Foreach ($to in $toArray)
{
      $s=[string]$to
   [int]$Start = $s.IndexOf("=")
   [int]$End = $s.IndexOf("}")
   [string]$ss=$s.Substring($Start+1,$End-$start-1)
  
 $messageParameters = @{
  smtpServer = “smtp server”
 From = [string]$from
  To =  $ss
  Subject =  "Warning!"
 Body = “Your mailbox is over 1Gb in size. Please delete old email messages to reduce size of your mailbox”
  }
   Send-MailMessage @messageParameters -BodyAsHtml
  }

Creating Scheduled Tasks for Exchange 2010 PowerShell Scripts:
http://www.mikepfeiffer.net/2010/02/creating-scheduled-tasks-for-exchange-2010-powershell-scripts/
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -command ". 'C:\Program Files\Microsoft\Exchange Server\V14\bin\RemoteExchange.ps1'; Connect-ExchangeServer -auto; c:\Scripts\MoveMailboxes.ps1"