(PowerShell) Scan for Emails with Attachments and Save Attachments to Files

Scan for emails with attachments and save attachments.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$imap = New-Object Chilkat.Imap

# Connect to an IMAP server.
# Use TLS
$imap.Ssl = $true
$imap.Port = 993
$success = $imap.Connect("imap.example.com")
if ($success -eq $false) {
    $($imap.LastErrorText)
    exit
}

# Login
$success = $imap.Login("myLogin","myPassword")
if ($success -eq $false) {
    $($imap.LastErrorText)
    exit
}

# Select an IMAP mailbox
$success = $imap.SelectMailbox("Inbox")
if ($success -eq $false) {
    $($imap.LastErrorText)
    exit
}

# We can choose to fetch UIDs or sequence numbers.
$fetchUids = $true

# Get the message IDs of all the emails in the mailbox
$messageSet = New-Object Chilkat.MessageSet
$success = $imap.QueryMbx("ALL",$fetchUids,$messageSet)
if ($success -eq $false) {
    $($imap.LastErrorText)
    exit
}

# Fetch the email headers into a bundle object:
$bundle = New-Object Chilkat.EmailBundle
$headersOnly = $true
$success = $imap.FetchMsgSet($headersOnly,$messageSet,$bundle)
if ($success -eq $false) {
    $($imap.LastErrorText)
    exit
}

# Scan for emails with attachments, and save the attachments
# to a sub-directory.
$fullEmail = New-Object Chilkat.Email
$emailHeader = New-Object Chilkat.Email
$i = 0
while ($i -lt $bundle.MessageCount) {
    # The bundle contains email headers..
    $bundle.EmailAt($i,$emailHeader)

    # Does this email have attachments?
    # Use GetMailNumAttach because the attachments
    # are not actually in the email object because
    # we only downloaded headers.
    $numAttach = $imap.GetMailNumAttach($emailHeader)

    if ($numAttach -gt 0) {
        # Download the entire email and save the
        # attachments. (Remember, we 
        # need to download the entire email because
        # only the headers were previously downloaded.

        # The ckx-imap-uid header field is added when
        # headers are downloaded.  This makes it possible
        # to get the UID from the email object.
        $uidStr = $emailHeader.GetHeaderField("ckx-imap-uid")
        $uid = $uidStr

        $success = $imap.FetchEmail($false,$uid,$true,$fullEmail)
        if ($success -eq $false) {
            $($imap.LastErrorText)
            exit
        }

        $success = $fullEmail.SaveAllAttachments("attachmentsDir")

        for ($j = 0; $j -le $numAttach - 1; $j++) {
            $filename = $imap.GetMailAttachFilename($emailHeader,$j)
            $($filename)
        }

    }

    $i = $i + 1
}

# Disconnect from the IMAP server.
$success = $imap.Disconnect()