Download attachment from user mailbox (Specific Folder) using EWS Managed API

Download Attachments from user Mailbox using EWS Managed API, you can define specific folder to download the attachments from.

set the $itemsview to download more no of items from user mailbox default is set to 10

# Usage Example: 
# .\Download-Attachments-from-Email-Ews.ps1 -mailbox "test@xyz.com" -downloadDirectory "\\Lab-01\Downloads" `
# -folderName "Reports" -AdminuserName admin@xyz.com -password Mypass -ItemsView 100

As we are going to use the EWS make sure you met all the prerequisites before you plan to run this script.

• Admin account should have application impersonation rights, you can follow this msdn post to setup the permissions.
• Install EWS managed API on system where you plan to run the script from, if API is not installed, download the same from here

Note: Please install the latest version of EWS API, version 2.2 is currently being used in my script.

#Download Attachment From User Mailbox Programmatically
#This script can be used to download attachments Programmatically from a user Mailbox

# Usage Example: 
# .\Download-Attachments-from-Email-Ews.ps1 -mailbox "test@xyz.com" -downloadDirectory "\\Lab-01\Downloads" `
# -folderName "Reports" -AdminuserName admin@xyz.com -password Mypass

param (
       $mailbox="sunil.chauhan@xyz.com",
       $downloadDirectory="\\Lab-host\Attachments",
       $folderName="Daily Report",
       $AdminuserName,
       $password,

       $itemsView=10
      )

$uri=[system.URI] "https://outlook.office365.com/ews/exchange.asmx"
$dllpath = "C:\Program Files\Microsoft\Exchange\Web Services\2.2\Microsoft.Exchange.WebServices.dll"
Import-Module $dllpath

## Set Exchange Version
$ExchangeVersion = [Microsoft.Exchange.WebServices.Data.ExchangeVersion]::Exchange2010_SP2
$service = New-Object Microsoft.Exchange.WebServices.Data.ExchangeService($ExchangeVersion)
$service.Credentials = New-Object Microsoft.Exchange.WebServices.Data.WebCredentials -ArgumentList $AdminuserName, $password
$service.url = $uri

$service.ImpersonatedUserId = New-Object Microsoft.Exchange.WebServices.Data.ImpersonatedUserId `
([Microsoft.Exchange.WebServices.Data.ConnectingIdType]::SMTPAddress,$mailbox);

$Folderid=new-object Microsoft.Exchange.WebServices.Data.FolderId `
([Microsoft.Exchange.WebServices.Data.WellKnownFolderName]::MsgFolderRoot,$Mailbox)

$MailboxRoot=[Microsoft.Exchange.WebServices.Data.Folder]::Bind($service,$folderid)
$FolderList = new-object Microsoft.Exchange.WebServices.Data.FolderView(100)
$FolderList.Traversal = [Microsoft.Exchange.WebServices.Data.FolderTraversal]::Deep
$findFolderResults = $MailboxRoot.FindFolders($FolderList)
$allFolders=$findFolderResults | ? {$_.FolderClass -eq "IPF.Note"}
$FolderToSearchForAttachment=$allFolders | ? {$_.DisplayName -eq $folderName} 

$ItemsWithAttachments=new-object Microsoft.Exchange.WebServices.Data.SearchFilter+IsEqualTo `
([Microsoft.Exchange.WebServices.Data.EmailMessageSchema]::HasAttachments, $true)

$ItemView=New-Object Microsoft.Exchange.WebServices.Data.ItemView($itemsView)
$ItemsWithAttachments = $FolderToSearchForAttachment.FindItems($ItemsWithAttachments,$ItemView)

Write-host "Downloading..."

foreach($MailItems in $ItemsWithAttachments.Items)

 {
  $MailItems.Load()
  foreach($attach in $MailItems.Attachments)

      {
       $Name=("AD-" +(($attach.lAstModifiedTime).ToShortDateString()) + "-" + $attach.Name.ToString())
       $Name=$Name.replace("/","-")
       write-host "Attachment saved to Path:"(($downloadDirectory + "\" + $name))
       $attach.Load()
       $File = new-object System.IO.FileStream(($downloadDirectory + "\" + $Name), [System.IO.FileMode]::Create)
       $File.Write($attach.Content, 0, $attach.Content.Length)
       $File.Close()   
      }
  }