This example demonstrates how to download only the headers of a mail message instead of the entire message.

Downloading mail headers only (instead of the entire mail message)

CopyC#

using System;
using S22.Imap;

namespace Test {
    class Program {
        static void Main(string[] args)
        {
            using (ImapClient Client = new ImapClient("imap.gmail.com", 993, "username",
              "password", AuthMethod.Login, true))
            {
                // This returns *ALL* messages in the inbox.
                IEnumerable<uint> uids = Client.Search( SearchCondition.All() );

                // If we're only interested in the subject line or envelope information, just downloading
                // the mail headers is alot cheaper and alot faster.
                IEnumerable<MailMessage> messages = Client.GetMessages(uids. FetchOptions.HeadersOnly);
            }
        }
    }
}