(VB.NET) Process Bounced Email in IMAP

Reads an IMAP mailbox and determines which emails are bounces.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

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

Dim imap As New Chilkat.Imap
Dim bounce As New Chilkat.Bounce

' Connect to an IMAP server.
' Use TLS
imap.Ssl = True
imap.Port = 993
Dim success As Boolean = imap.Connect("imap.someMailServer.com")
If (success <> True) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If


' Login
success = imap.Login("admin@chilkatsoft.com","myPassword")
If (success <> True) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If


' Select an IMAP mailbox
success = imap.SelectMailbox("INBOX.bounceSamples")
If (success <> True) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If



Dim messageSet As Chilkat.MessageSet
' We can choose to fetch UIDs or sequence numbers.
Dim fetchUids As Boolean = True
' Get the message IDs of all the emails in the mailbox
messageSet = imap.Search("ALL",fetchUids)
If (imap.LastMethodSuccess = False) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If


' Fetch the emails into a bundle object:
Dim bundle As Chilkat.EmailBundle
bundle = imap.FetchBundle(messageSet)
If (imap.LastMethodSuccess = False) Then

    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If


' Loop over the bundle and display the FROM and SUBJECT of each.
Dim i As Integer = 0
Dim numEmails As Integer = bundle.MessageCount
While i < numEmails
    Dim email As Chilkat.Email = bundle.GetEmail(i)

    success = bounce.ExamineEmail(email)

    Debug.WriteLine("Subject: " & email.Subject)
    Debug.WriteLine("Bounce Type = " & bounce.BounceType & ", email address = " & bounce.BounceAddress)



    i = i + 1
End While

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