> I get a error message that the UID does not exists
Most likely you are trying to download this message for a second time.
Gmail’s POP3 behavior is quite different from other POP3 servers (http://www.limilabs.com/blog/gmail-pop3-behavior)
I strongly advise you to use IMAP, it’s going to by much easier for you and you’ll be able to access other folders.

To access different folder than Inbox you need to use IMAP protocol:
http://www.limilabs.com/blog/folder-access-with-imap

Your dll is great, but there is a problem that I am facing.
I have added the save attachment option on a button click event:


pop3.ConnectSSL("pop.gmail.com");
pop3.UseBestLogin("username", "password");

foreach (MimeData attachment in email.Attachments)
{
if (attachment.FileName == lblAttachment.Text)
{
attachment.Save("c:\\" + attachment.SafeFileName);
}
}
pop3.Close();


but I get a error message that the UID does not exists, and also how do I access the sent mails (sent items)

You need to download and add a reference to Mail.dll IMAP library:
http://www.limilabs.com/mail/download

1. When using IMAP protocol use IMAP server: imap.gmail.com
2. Use SSL

using (Imap client = new Imap())
{
    client.ConnectSSL("imap.gmail.com");
    client.Login("user@gmail.com", "password");
    client.SelectInbox();

    // ...

    client.Close();
}

using (Imap imap = new Imap())
{
imap.Connect(“smtp.gmail.com”);
imap.UseBestLogin(“imap.dmtrigger@gmail.com”, “password”);
imap.SelectInbox();
….
….

But I get this error :
“A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond …. ”

Would this be the problem with the account ? But I can send and recieve mails from the account I have set up in my Outlook.
Can anyone help?

Thanks,
Lax.

Most likely the sender of the message have not specified the filename at all.
In such case SafeFileName property (which you probably use with Save method) generates unique filename.

You can of course check FileName property for null and act according to your needs.

Please be more specific. If you have problems parsing the message please follow the steps here: http://www.limilabs.com/blog//i-have-problems-parsing-the-message and contact us directly.