Fetch and process oldest email in the inbox using EWS Managed API

Question

I'm using the script below along with EWS Managed API 2.2 to grab emails and read To and Sender property. It works fine for all emails, but i want to make it fetch, process oldest email (1x at the time), then move/delete it. Is there a way to set filters or arrange it to achieve the below, or anyone has ever worked on something like this?

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$mail= "[email protected]"
$password="password"

# Set the path to your copy of EWS Managed API 
$dllpath = "C:\Program Files\Microsoft\Exchange\Web Services\2.2\Microsoft.Exchange.WebServices.dll" 
# Load the Assemply 
[void][Reflection.Assembly]::LoadFile($dllpath) 

# Create a new Exchange service object 
$service = new-object Microsoft.Exchange.WebServices.Data.ExchangeService 

#These are your O365 credentials
$Service.Credentials = New-Object Microsoft.Exchange.WebServices.Data.WebCredentials($mail,$password)

# Autodiscover using the mail address set above
$service.AutodiscoverUrl($mail)

# create Property Set to include body and header of email
$PropertySet = New-Object Microsoft.Exchange.WebServices.Data.PropertySet([Microsoft.Exchange.WebServices.Data.BasePropertySet]::FirstClassProperties)

# set email body to text
$PropertySet.RequestedBodyType = [Microsoft.Exchange.WebServices.Data.BodyType]::Text;

# Set how many emails we want to read at a time
$numOfEmailsToRead = 1

# Index to keep track of where we are up to. Set to 0 initially. 
$index = 0 

# Do/while loop for paging through the folder 
do 
{ 
    # Set what we want to retrieve from the folder. This will grab the first $pagesize emails
    $view = New-Object Microsoft.Exchange.WebServices.Data.ItemView($numOfEmailsToRead,$index) 
    # Retrieve the data from the folder 
    $findResults = $service.FindItems([Microsoft.Exchange.WebServices.Data.WellKnownFolderName]::Inbox,$view) 
    foreach ($item in $findResults.Items)
    {
        # load the additional properties for the item
        $item.Load($propertySet)

        # Output the results
        $To = $($item.ToRecipients)
        $From = $($item.Sender)

    } 
    # Increment $index to next block of emails
    $index += $numOfEmailsToRead
} while ($findResults.MoreAvailable) # Do/While there are more emails to retrieve
##############

Any help is very much appreciated.

Thanks

Answer 1

In your ItemVeiw you can use OrderBy and sort it ascending eg after the line

$view = New-Object Microsoft.Exchange.WebServices.Data.ItemView($numOfEmailsToRead,$index) 

add

$view.OrderBy.add([Microsoft.Exchange.WebServices.Data.ItemSchema]::DateTimeReceived,[Microsoft.Exchange.WebServices.Data.SortDirection]::Ascending)