VB.NET

Connect to an IMAP Server

Demonstrates the Chilkat Imap.Connect method, which establishes a TCP connection to the IMAP server but does not authenticate. The argument may be a hostname, IPv4, or IPv6 address; configure Ssl and Port first. This example connects with implicit TLS, then logs in and disconnects.

Background: IMAP (Internet Message Access Protocol) is the protocol for accessing mail that stays on the server — unlike POP3, which typically downloads and removes it. That server-side model is what lets multiple devices see the same mailboxes, folders, and read/unread state. A session starts by connecting (usually implicit TLS on port 993), then authenticating — Connect performs only the first step, so it is always followed by Login.

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Dim success As Boolean = False

'  Demonstrates the Imap.Connect method, which establishes a TCP connection to the IMAP
'  server but does not authenticate.  Call Login after connecting to authenticate.

Dim imap As New Chilkat.Imap

'  Use implicit TLS on the standard IMAPS port.
imap.Ssl = True
imap.Port = 993

'  Establish the connection to the IMAP server (no authentication yet).
success = imap.Connect("imap.example.com")
If (success = False) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If

Debug.WriteLine("Connected to the IMAP server.")

'  Authenticate the session.
success = imap.Login("user@example.com","myPassword")
If (success = False) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If


'  Disconnect when finished.
success = imap.Disconnect()
If (success = False) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If