Downloading .xlsx attachment from Outlook of Specific Date using Powershell

Question

I have the below script. This $Tests shows the list of .xlsx attachment of specific date but is not able to download and throws an error. Please find the below script.

Add-type -assembly "Microsoft.Office.Interop.Outlook"
$olDefaultFolders = "Microsoft.Office.Interop.Outlook.olDefaultFolders" -as [type]
$outlook = New-Object -comobject Outlook.Application
$mapi = $outlook.GetNameSpace(“MAPI”)
$inbox = $mapi.GetDefaultFolder(6)
$FilePath= "c:\temp\Test\"
$subfolder = $inbox.Folders | Where-Object {$_.Name -eq “Test”}
$mail=$subfolder.Items |Select-Object -Property "ReceivedTime",@{name="Attachments";expression={$_.Attachments|%{$_.DisplayName}}} | Where-Object{$_.attachments -match ".xlsx" -and ($_.receivedtime -match "9/15/2020")} | Select-Object "attachments"
$Test = $mail.attachments
foreach ($out in $test) {$_.attachments|foreach {
Write-Host $_.filename
$Filename = $_.filename
If ($out.Contains("xlsx")) {
$_.saveasfile((Join-Path $FilePath "$out")) }}}

I am able to filter the .xlsx Attachments with Specific Date. But after this, I don't know how to save/download them.

Answer 1

Working with com objects can be rather frustrating in powershell. I recommend you get extremely familiar with Get-Member . You really have to interrogate each object. I've simplified your script as well as tested thoroughly. It will download each matching attachment (name) from each match email (received date)

Add-type -assembly "Microsoft.Office.Interop.Outlook"
$olDefaultFolders = "Microsoft.Office.Interop.Outlook.olDefaultFolders" -as [type]
$outlook = New-Object -comobject Outlook.Application
$mapi = $outlook.GetNameSpace(“MAPI”)
$inbox = $mapi.GetDefaultFolder(6)
$FilePath= "c:\temp\Test\"
$subfolder.Items | Where-Object {$_.receivedtime -match "9/20/2020" -and $($_.attachments).filename -match '.xlsx'} | foreach {
    $filename = $($_.attachments | where filename -match '.xlsx').filename
    foreach($file in $filename)
    {
        Write-Host Downloading $file to $filepath -ForegroundColor green
        $outpath = join-path $filepath $file
        $($_.attachments).saveasfile($outpath)
    }
}

You may use this for more of an "in-line" approach.

Add-type -assembly "Microsoft.Office.Interop.Outlook"
$olDefaultFolders = "Microsoft.Office.Interop.Outlook.olDefaultFolders" -as [type]
$outlook = New-Object -comobject Outlook.Application
$mapi = $outlook.GetNameSpace(“MAPI”)
$inbox = $mapi.GetDefaultFolder(6)
$FilePath= "c:\temp\Test\"
$subfolder.Items | Where-Object {$_.receivedtime -match "9/20/2020" -and $($_.attachments).filename -match '.xlsx'} | foreach {
    foreach($attachment in $($_.attachments | where filename -match '.xlsx'))
    {
        Write-Host Downloading $attachment.filename to $filepath -ForegroundColor green
        $attachment.SaveAsFile((join-path $FilePath $attachment.filename))
        
    }
}