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MimeKit

IPop3ClientExpirePolicy Property

Gets the expiration policy.

Namespace: MailKit.Net.Pop3
Assembly: MailKit (in MailKit.dll) Version: 4.7.1
Syntax
C#
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int ExpirePolicy { get; }

Property Value

Int32
The expiration policy.
Remarks

If the server supports the EXPIRE capability (Expire), the value of the ExpirePolicy property will reflect the value advertized by the server.

A value of -1 indicates that messages will never expire.

A value of 0 indicates that messages that have been retrieved during the current session will be purged immediately after the connection is closed via the QUIT command.

Values larger than 0 indicate the minimum number of days that the server will retain messages which have been retrieved.

Example
C#
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public static void PrintCapabilities ()
{
    using (var client = new Pop3Client ()) {
        client.Connect ("pop.gmail.com", 995, SecureSocketOptions.SslOnConnect);

        if (client.Capabilities.HasFlag (Pop3Capabilities.SASL)) {
            var mechanisms = string.Join (", ", client.AuthenticationMechanisms);
            Console.WriteLine ("The POP3 server supports the following SASL mechanisms: {0}", mechanisms);
        }

        client.Authenticate ("username", "password");

        if (client.Capabilities.HasFlag (Pop3Capabilities.Apop))
            Console.WriteLine ("The server supports APOP authentication.");

        if (client.Capabilities.HasFlag (Pop3Capabilities.Expire)) {
            if (client.ExpirePolicy > 0)
                Console.WriteLine ("The POP3 server automatically expires messages after {0} days", client.ExpirePolicy);
            else
                Console.WriteLine ("The POP3 server will never expire messages.");
        }

        if (client.Capabilities.HasFlag (Pop3Capabilities.LoginDelay))
            Console.WriteLine ("The minimum number of seconds between login attempts is {0}.", client.LoginDelay);

        if (client.Capabilities.HasFlag (Pop3Capabilities.Pipelining))
            Console.WriteLine ("The POP3 server can pipeline commands, so using client.GetMessages() will be faster.");

        if (client.Capabilities.HasFlag (Pop3Capabilities.Top))
            Console.WriteLine ("The POP3 server supports the TOP command, so it's possible to download message headers.");

        if (client.Capabilities.HasFlag (Pop3Capabilities.UIDL))
            Console.WriteLine ("The POP3 server supports the UIDL command which means we can track messages by UID.");

        client.Disconnect (true);
    }
}
See Also