PowerShell Requires Chilkat v11.0.0+

Mark IMAP Email as Read/Unread (Seen/Unseen)

Demonstrates how to mark emails as read or unread. PowerShell

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

$success = $false

#  This example assumes 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
}

#  Set PeekMode so that downloaded messages are not
#  automatically marked as seen.
$imap.PeekMode = $true

#  The NumMessages property contains the number of messages 
#  in the currently selected mailbox.
$numMsgs = $imap.NumMessages
if ($numMsgs -eq 0) {
    exit
}

$email = New-Object Chilkat.Email

for ($i = 1; $i -le $numMsgs; $i++) {
    #  Download each email by sequence number (not UID)
    $success = $imap.FetchEmail($false,$i,$false,$email)
    if ($success -eq $false) {
        $($imap.LastErrorText)
        exit
    }

    #  If desired, mark the email as SEEN.  There are two
    #  ways to do it:

    #  1) Set the flag directly by using the sequence number
    #  Indicate that we are passing a sequence number and
    #  not a UID:
    $bIsUid = $false
    #  Set the SEEN flag = 1 to mark the email as SEEN,
    #  or set it to 0 to mark it as not-seen.
    $success = $imap.SetFlag($i,$bIsUid,"SEEN",1)
    if ($success -eq $false) {
        $($imap.LastErrorText)
        exit
    }

    #  2) Alternatively, we can use the email object.
    #  When an email is downloaded from the IMAP server
    #  Chilkat will add a "ckx-imap-uid" header to the email.
    #  This makes it possible to know the UID associated with
    #  the email.  (This is not the sequence number, which may change
    #  from session to session, but the UID which does not change.
    #  The SetMailFlag method is identical to SetFlag, except
    #  it gets the UID from the ckx-imap-uid header.
    #  For example:
    $success = $imap.SetMailFlag($email,"SEEN",1)
    if ($success -eq $false) {
        $($imap.LastErrorText)
        exit
    }

}

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