(VBScript) Determine the Number of Unseen Email Messages

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

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

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

' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Imap")
set imap = CreateObject("Chilkat.Imap")

' Connect to an IMAP server.
' Use TLS
imap.Ssl = 1
imap.Port = 993
success = imap.Connect("imap.someMailServer.com")
If (success <> 1) Then
    outFile.WriteLine(imap.LastErrorText)
    WScript.Quit
End If

' Login
success = imap.Login("***","***")
If (success <> 1) Then
    outFile.WriteLine(imap.LastErrorText)
    WScript.Quit
End If

' Select an IMAP mailbox
success = imap.SelectMailbox("Inbox")
If (success <> 1) Then
    outFile.WriteLine(imap.LastErrorText)
    WScript.Quit
End If

' After selecting the mailbox. the total number of emails
' is immediately available:
totalNum = imap.NumMessages
outFile.WriteLine("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 = 1

' messageSet is a Chilkat.MessageSet
Set messageSet = imap.Search("UNSEEN",fetchUids)
If (imap.LastMethodSuccess = 0) Then
    outFile.WriteLine(imap.LastErrorText)
    WScript.Quit
End If

numUnseen = messageSet.Count
outFile.WriteLine(numUnseen)

outFile.WriteLine("UIDs ----")

' Display the UIDs
i = 0
Do While i < messageSet.Count
    outFile.WriteLine(messageSet.GetId(i))
    i = i + 1
Loop

' Disconnect from the IMAP server.
success = imap.Disconnect()


outFile.Close