B4X Requires Chilkat v11.0.0+

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.

B4X

Dim success As Boolean = False

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

Dim imap As ChilkatImap
imap.Initialize("imap")

'  Indicate that STARTTLS should be used to convert
'  to a secure TLS/SSL connection:
imap.StartTls = True
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 = False Then
    Log(imap.LastErrorText)
    Return
End If


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

'  Login
success = imap.Login("myLogin", "myPassword")
If success = False Then
    Log(imap.LastErrorText)
    Return
End If


'  Select an IMAP mailbox
success = imap.SelectMailbox("Inbox")
If success = False Then
    Log(imap.LastErrorText)
    Return
End If


'  Get the message IDs of all the emails in the mailbox
Dim fetchUids As Boolean = True
Dim messageSet As ChilkatMessageSet
messageSet.Initialize
success = imap.QueryMbx("ALL", fetchUids, messageSet)
If success = False Then
    Log(imap.LastErrorText)
    Return
End If


'  Fetch the emails into a bundle object:
Dim bundle As ChilkatEmailBundle
bundle.Initialize
Dim headersOnly As Boolean = False
success = imap.FetchMsgSet(headersOnly, messageSet, bundle)
If success = False Then
    Log(imap.LastErrorText)
    Return
End If


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

    Log(email.From)
    Log(email.Subject)
    Log("--")
    i = i + 1
Loop

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