ComponentSoft.net Ultimate POP3

How to use POP3 Component in C#, VB.NET and ASP.NET

How to List Messages

Both ImapClient and Pop3Client allow you to retrieve a list of messages on the server with methods named ListMessages.With the Pop3Client, you can pass an optional flag parameter indicating which part of the message will be retrieved. The ListMessages method returns a collection of Pop3Message object containing information about messages you have requested as shown the following steps:

  • Add using directives to your code to create aliases for existing root namespaces and avoid having to type the fully qualified type names. The code looks similar to the following:

    C#

    using ComponentSoft.Net.Mail;

    VB.NET

    Imports ComponentSoft.Net.Mail

  • Create a new instance of the Pop3Client class and connect to the POP3 server with Connect methods. The code looks similar to the following:
    C#

    // Create a new instance of the Pop3Client class.
    Pop3Client client = new Pop3Client();
    // Connect to the server.
    client.Connect("myserver");
    // Or you can specify the POP3 port with
    // client.Connect("myserver", 110);
    // Login to the server.
    client.Authenticate("user", "password");
    // List messages. Only Size and UniqueId are retrieved.
    Pop3MessageCollection list = client.ListMessages(EnvelopeParts.Size | EnvelopeParts.UniqueId);
    foreach (Pop3Message m in list)
    {
       Console.WriteLine(    string.Format("UniqueId: {0}, Size: {1}", m.UniqueId, m.Size));
    }
    // Close the connection.
    client.Disconnect();

    VB.NET

    ' Create a new instance of the Pop3Client class.
    Dim client As New Pop3Client()
    ' Connect to the server.
    client.Connect("myserver")
    ' Or you can specify the POP3 port with
    ' client.Connect("myserver", 110);
    ' Login to the server.
    client.Authenticate("user", "password")
    ' List messages. Only Size and UniqueId are retrieved.
    Dim list As Pop3MessageCollection = client.ListMessages(EnvelopeParts.Size OrEnvelopeParts.UniqueId)
    For Each m As Pop3Message In list
        Console.WriteLine(String.Format("UniqueId: {0}, Size: {1}", m.UniqueId, m.Size))
    Next m
    ' Close the connection.
    client.Disconnect()

    • How to obtain mailbox information

    The simplest way to obtain information about a specified mailbox is using GetMailboxInfo method. You only need to pass the mailbox name to the method. It returns a Pop3MailboxInfo object containing information about the mailbox you have requested.

    The following steps will help you to do that using ComponentSoft Mail component:

    C#

    // Create a new instance of the Pop3Client class.
 Pop3Client client = new Pop3Client();
 // Connect to the server.
 client.Connect("myserver");
 // Or you can specify the POP3 port with
 // client.Connect("myserver", 110);
 // Login to the server.
 client.Authenticate("user", "password");
 // Obtain mailbox information.
 Pop3MailboxInfo info = client.GetMailboxInfo();
 // Print out some information.
 Console.WriteLine("Number of messages found: {0}", info.MessageCount);
 Console.WriteLine("Mailbox Size: {0}", info.Size);
 // Close the connection.
 client.Disconnect();

    VB.NET

    ' Create a new instance of the Pop3Client class.
 Dim client As New Pop3Client()
 ' Connect to the server.
 client.Connect("myserver")
 ' Or you can specify the POP3 port with
 ' client.Connect("myserver", 110);
 ' Login to the server.
 client.Authenticate("user", "password")
 ' Obtain mailbox information.
 Dim info As Pop3MailboxInfo = client.GetMailboxInfo()
 ' Print out some information.
 Console.WriteLine("Number of messages found: {0}", info.MessageCount)
 Console.WriteLine("Mailbox Size: {0}", info.Size)
 ' Close the connection.
 client.Disconnect()