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

Scan for emails with attachments and save attachments.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# 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 = $imap.Connect("imap.someMailServer.com")
if ($success -ne $true) {
    $($imap.LastErrorText)
    exit
}

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

# Select an IMAP mailbox
$success = $imap.SelectMailbox("Inbox")
if ($success -ne $true) {
    $($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 = $imap.Search("ALL",$fetchUids)
if ($imap.LastMethodSuccess -ne $true) {
    $($imap.LastErrorText)
    exit
}

# Fetch the email headers into a bundle object:

$bundle = $imap.FetchHeaders($messageSet)
if ($imap.LastMethodSuccess -ne $true) {

    $($imap.LastErrorText)
    exit
}

# Scan for emails with attachments, and save the attachments
# to a sub-directory.

for ($i = 0; $i -le $bundle.MessageCount - 1; $i++) {

    $email = $bundle.GetEmail($i)

    # Does this email have attachments?
    # Use GetMailNumAttach because the attachments
    # are not actually in the email object because
    # we only downloaded headers.
    # (Had we downloaded the full emails by
    # calling mailman.FetchBundle, we could look
    # at the email object's NumAttachments property.)
    $numAttach = $imap.GetMailNumAttach($email)

    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.
        # If the entire emails were downloaded by
        # calling FetchBundle instead of FetchHeaders,
        # this would not be necessary.

        # 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 = $email.GetHeaderField("ckx-imap-uid")
        $uid = $uidStr

        $fullEmail = $imap.FetchSingle($uid,$true)
        if ($imap.LastMethodSuccess -eq $true) {
            $success = $fullEmail.SaveAllAttachments("attachmentsDir")

        }

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

    }

}

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