Could we have a bit more information please as everyone is assuming that you are having trouble with the email assigned by your ISP. Is this the case or are you using a webmail service such as Hotmail or Gmail? Personally I don't use hotmail/livemail but I do use Gmail/Googlemail and know that in order for them to use pop3/imap that it must be activated via the web setup first.
I would also suggest the following actions within your email client.
1. Incoming mail will be either pop3 OR imap
2. Outgoing mail (when you send an email to somebody else) will be SMTP
3. Ensure your user ID and password are correct. Depending on the provider your username can either be the full email address (
[email protected]) or just the name (johndoe). Check capitalisation of your pwd
4. Do you have the correct port numbers assigned for your pop3/imap/smtp within your email client?
5. Have you set yourself up to use secure autentication or not?
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Easiest thing to do would be to wipe the account settings in your outlook r whatever you have been using and start it again step by step and be absolutely sure you are inputting the correct information.