Thanks everyone for responding. Sorry I've just got back to you.
Thinking it through I realized that my LineOne dial up is the only one I have so theoretically any e-mails to talk21 should come through on Outlook Express.
I've tried a couple of test runs sending an e-mail to myself at talk21. It shows as being downloaded in Outlook Express but doesn't appear in my Inbox. And there is nothing in my Talk21 account.
Can anyone please advise where it has gone?