Visual Basic 6.0

IMAP STARTTLS (Explicit TLS/SSL)

The StartTls property is set to force the Connect method to automatically convert an connection to TLS/SSL via the STARTTLS IMAP command.

This is also known as "explicit TLS/SSL" as opposed to "implicit TLS/SSL". With implicit TLS/SSL, the IMAP client connects on the well-known IMAP TLS/SSL port 993 and the secure channel is immediately established. With explicit TLS/SSL, the IMAP client connects on the typical non-secure port (143 usually) and the converts the connection via the STARTTLS command.

Visual Basic 6.0

Dim success As Long
success = 0

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

Dim imap As New ChilkatImap

' Indicate that STARTTLS should be used to convert
' to a secure TLS/SSL connection:
imap.StartTls = 1
imap.Port = 143

' Connect to an IMAP server and convert the connection
' to TLS/SSL via STARTTLS.
success = imap.Connect("imap.example.com")
If (success = 0) Then
    Debug.Print imap.LastErrorText
    Exit Sub
End If

' The remainder of this example is the same as for 
' non-TLS/SSL...

' Login
success = imap.Login("myLogin","myPassword")
If (success = 0) Then
    Debug.Print imap.LastErrorText
    Exit Sub
End If

' Select an IMAP mailbox
success = imap.SelectMailbox("Inbox")
If (success = 0) Then
    Debug.Print imap.LastErrorText
    Exit Sub
End If

' Get the message IDs of all the emails in the mailbox
Dim fetchUids As Long
fetchUids = 1
Dim messageSet As New MessageSet
success = imap.QueryMbx("ALL",fetchUids,messageSet)
If (success = 0) Then
    Debug.Print imap.LastErrorText
    Exit Sub
End If

' Fetch the emails into a bundle object:
Dim bundle As New ChilkatEmailBundle
Dim headersOnly As Long
headersOnly = 0
success = imap.FetchMsgSet(headersOnly,messageSet,bundle)
If (success = 0) Then
    Debug.Print imap.LastErrorText
    Exit Sub
End If

' Loop over the bundle and display the FROM and SUBJECT of each.
Dim email As New ChilkatEmail
Dim i As Long
i = 0
Dim numEmails As Long
numEmails = bundle.MessageCount
Do While i < numEmails
    success = bundle.EmailAt(i,email)

    Debug.Print email.From
    Debug.Print email.Subject
    Debug.Print "--"
    i = i + 1
Loop

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