Move folder content from a source mailbox to a target mailbox, in Exchange Online (EWS Managed API 2.2)

As a result of many customer inquiries, I have decided to write the script below that moves mailbox data from a source mailbox to a target mailbox. The script is not very advanced and I plan to upgrade it once I have more time. The idea is to create in the target mailbox also the folders that are existing only in the source mailbox. For now, you are just getting informed that there are folders in the source side that are missing from the target side and you should go ahead and create them there as well. Hope you'll find it useful.

Prerequisites:

• Grant full access rights on the source and target mailboxes, to the mailbox for which you provide the credentials within the script (#Provide the credentials of the Exchange Online mailbox...).
• In order to run the script, you have to copy paste its content into a Notepad file and save it with the extension ".ps1". Then, you have to connect to Exchange Online with PowerShell and run it: https://technet.microsoft.com/en-us/library/jj984289(v=exchg.160).aspx.

DISCLAIMER: This application is a sample application. The sample is provided "as is" without warranty of any kind. Microsoft further disclaims all implied warranties including without limitation any implied warranties of merchantability or of fitness for a particular purpose. The entire risk arising out of the use or performance of the samples remains with you. in no event shall Microsoft or its suppliers be liable for any damages whatsoever (including, without limitation, damages for loss of business profits, business interruption, loss of business information, or other pecuniary loss arising out of the use of or inability to use the samples, even if Microsoft has been advised of the possibility of such damages. Because some states do not allow the exclusion or limitation of liability for consequential or incidental damages, the above limitation may not apply to you.



# The script requires EWS Managed API 2.2, which can be downloaded here: https://www.microsoft.com/en-gb/download/details.aspx?id=42951
# Make sure the Import-Module command matches the Microsoft.Exchange.WebServices.dll location of EWS Managed API, chosen during the installation



$SourceMailbox = Read-Host -Prompt "Source mailbox"
$TargetMailbox = Read-Host -Prompt "Target mailbox"

Import-Module -Name "C:Program FilesMicrosoftExchangeWeb Services2.2Microsoft.Exchange.WebServices.dll"

$service = New-Object Microsoft.Exchange.WebServices.Data.ExchangeService -ArgumentList Exchange2013_SP1

#Provide the credentials of the Exchange Online mailbox that has full access permissions on the source and on the target mailboxes
$service.Credentials = new-object Microsoft.Exchange.WebServices.Data.WebCredentials -ArgumentList "account@domain.onmicrosoft.com","Password"

#Exchange Online URL
$service.Url= new-object Uri("https://outlook.office365.com/EWS/Exchange.asmx")



function MoveFolderItems ($Source, $Target)
{

$ItemView = new-object Microsoft.Exchange.WebServices.Data.ItemView(1000)

$FindItemResults = $service.FindItems($Source,$ItemView)

if($FindItemResults.TotalCount)

{

write-host "$($FindItemResults.TotalCount) item(s) have been found in the Source mailbox folder and will be moved to the Target mailbox folder. If they are not, then, their item class is out of the scope of the current operation." -ForegroundColor White

do
{
foreach ($Item in $FindItemResults.Items)
{

if ($Item.ItemClass -match "IPM.Note" -or $Item.ItemClass -match "IPM.StickyNote" -or $Item.ItemClass -match "IPM.Activity" -or $Item.ItemClass -match "IPM.File")
 { $Message = [Microsoft.Exchange.WebServices.Data.EmailMessage]::Bind($service,$Item.Id); $Message.Move($Target); continue; }

if ($Item.ItemClass -match "IPM.Appointment")
 { $Message = [Microsoft.Exchange.WebServices.Data.Appointment]::Bind($service,$Item.Id); $Message.Move($Target); continue; }

if ($Item.ItemClass -match "IPM.Contact")
 { $Message = [Microsoft.Exchange.WebServices.Data.Contact]::Bind($service,$Item.Id); $Message.Move($Target); continue; }

if ($Item.ItemClass -match "IPM.Task")
 { $Message = [Microsoft.Exchange.WebServices.Data.Task]::Bind($service,$Item.Id); $Message.Move($Target); continue; }
 }

$ItemView.offset += $FindItemResults.Items.Count

}while($FindItemResults.MoreAvailable -eq $true)

}
 else { Write-Host "Source folder empty!" -ForegroundColor Yellow }

}


function ConvertFolderId ($OwaId, $EmailAddress)
{

$OwaId = $OwaId.Replace('+','%2b')

$aiItem = New-Object Microsoft.Exchange.WebServices.Data.AlternateId

$aiItem.Mailbox = $EmailAddress

$aiItem.UniqueId = $OwaId

$aiItem.Format = [Microsoft.Exchange.WebServices.Data.IdFormat]::OwaId

$convertedId = $service.ConvertId($aiItem, [Microsoft.Exchange.WebServices.Data.IdFormat]::EwsId)

$folderid = new-object Microsoft.Exchange.WebServices.Data.FolderId($convertedId.UniqueId)

return $folderid;

}


foreach ($Folder in Get-MailboxFolderStatistics $SourceMailbox )
{

$i=0;

if($Folder.ContainerClass) {
 foreach ($Folder2 in Get-MailboxFolderStatistics $TargetMailbox ) {

if($Folder2.ContainerClass -and $Folder.FolderPath.ToString() -eq $Folder2.FolderPath.ToString())

{

$SourceFolderId = ConvertFolderId $Folder.FolderId $SourceMailbox

$TargetFolderId = ConvertFolderId $Folder2.FolderId $TargetMailbox

Write-Host "Source Folder: $($Folder.Name)" -ForegroundColor White

MoveFolderItems $SourceFolderId $TargetFolderId

$i++;

break;

}

}

if(!$i) {write-host "Please create a corresponding folder with the Folder Path $($Folder.FolderPath) in the Target mailbox!" -ForegroundColor Red; continue; }

}
 }

Note: In case you want to copy the items from the source mailbox to the target mailbox, you just need to modify the operation from $Message.Move($Target) to $Message.Copy($Target).