PowerShell

Determine the Number of Unseen Email Messages

Demonstrates how to determine how many unseen messages exist in an email account on an IMAP server. PowerShell

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

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

# After selecting the mailbox. the total number of emails
# is immediately available:
$totalNum = $imap.NumMessages
$("Num messages = " + $totalNum)

# To determine the number of unseen messages, a call
# to Search is required, which returns the set of UIDs
# of all unseen messages.

# We can choose to fetch UIDs or sequence numbers.
$fetchUids = $true
$messageSet = New-Object Chilkat.MessageSet
$success = $imap.QueryMbx("UNSEEN",$fetchUids,$messageSet)
if ($success -eq $false) {
    $($imap.LastErrorText)
    exit
}

$numUnseen = $messageSet.Count
$($numUnseen)

$("UIDs ----")

# Display the UIDs
$i = 0
while ($i -lt $messageSet.Count) {
    $($messageSet.GetId($i))
    $i = $i + 1
}

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