VB.NET
VB.NET
Check the Number of Messages in a POP3 Mailbox
See more POP3 Examples
Demonstrates the Chilkat MailMan.CheckMail method, which returns the number of messages currently available in the POP3 mailbox, or -1 if an error occurs. If no POP3 session is active, Chilkat connects and authenticates automatically using the configured settings. This example configures the POP3 connection and checks the message count.
Background: POP3 (Post Office Protocol version 3) is the classic protocol for downloading mail from a server to a client. A client connects, authenticates with a username and password, and can then list, retrieve, or delete messages. Modern connections use implicit TLS on port
995 (PopSsl = true). CheckMail is a quick way to ask "how many messages are waiting?" without downloading any of them.Chilkat VB.NET Downloads
' Demonstrates the MailMan.CheckMail method, which returns the number of messages currently
' available in the POP3 mailbox (or -1 if an error occurs). If no POP3 session is active,
' Chilkat connects and authenticates automatically using the configured settings.
Dim mailman As New Chilkat.MailMan
' Configure the POP3 server connection.
mailman.MailHost = "pop.example.com"
mailman.MailPort = 995
mailman.PopSsl = True
mailman.PopUsername = "user@example.com"
mailman.PopPassword = "myPassword"
' Check the mailbox. A return value of -1 indicates an error.
Dim numMessages As Integer = mailman.CheckMail()
Debug.WriteLine("Number of messages in the mailbox: " & numMessages)
' Note: Explicitly connecting/authenticating is optional. Chilkat MailMan automatically
' connects and authenticates -- using the property settings above -- whenever a server
' operation requires it. Calling the explicit connect/authenticate methods can still be
' helpful to determine whether a failure occurs while connecting or while authenticating.