(VB.NET) Delete All IMAP Email

Demonstrates two ways to delete all email in a mailbox on an IMAP server.

Note: This example requires Chilkat v11.0.0 or greater.

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Dim success As Boolean = False

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

Dim imap As New Chilkat.Imap

' Turn on session logging:
imap.KeepSessionLog = True

' Connect to an IMAP server.
' Use TLS
imap.Ssl = True
imap.Port = 993
success = imap.Connect("imap.example.com")
If (success = False) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If


' Login
success = imap.Login("myLogin","myPassword")
If (success = False) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If


' Select an IMAP mailbox
success = imap.SelectMailbox("Inbox.RubyMail")
If (success = False) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If


' Get the complete set of Uids for email in the selected mailbox.
Dim messageSet As New Chilkat.MessageSet
success = imap.QueryMbx("ALL",True,messageSet)
If (success = False) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If


' Set the Deleted flag for each message.
' (ExpungeAndClose must be called to finalize the delete.)
success = imap.SetFlags(messageSet,"Deleted",1)
If (success = False) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If


' Alternatively, the Deleted flag may be set for each UID
' individiually, but this is less efficient:
Dim i As Integer = 0
Dim n As Integer = messageSet.Count
While i < n
    success = imap.SetFlag(messageSet.GetId(i),messageSet.HasUids,"Deleted",1)
    If (success = False) Then
        Debug.WriteLine(imap.LastErrorText)
        Exit Sub
    End If

    i = i + 1
End While

' Expunge and close the mailbox.
success = imap.ExpungeAndClose()
If (success = False) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If


' Display the session log.
Debug.WriteLine(imap.SessionLog)

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