(VB.NET) Download Unread Email from IMAP Mailbox

Download unread email messages from an IMAP mailbox.

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

' 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")
If (success <> True) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If



Dim messageSet As Chilkat.MessageSet
Dim fetchUids As Boolean = True

' Find emails marked as seen or not already seen:
Dim seenSearch As String = "SEEN"
Dim notSeenSearch As String = "NOT SEEN"

' Get the set of unseen message UIDs
messageSet = imap.Search(notSeenSearch,fetchUids)
If (imap.LastMethodSuccess = False) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If


' Fetch the unseen 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


' Display the Subject and From of each email.
Dim i As Integer = 0
Dim numEmails As Integer = bundle.MessageCount
While i < numEmails
    Dim email As Chilkat.Email = bundle.GetEmail(i)

    Debug.WriteLine(email.GetHeaderField("Date"))
    Debug.WriteLine(email.Subject)
    Debug.WriteLine(email.From)
    Debug.WriteLine("--")


    i = i + 1
End While

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