Why & when do I need these settings?
Hotmail, Yahoo! Mail, GMail and other providers are basically email services designed to provide you with email mailbox accesss directly from the web. However, going online and logging on to their sites is not always the most convenient way for reading and sending emails.
On the other hand, you have the alternative to send and receive emails through such a mailbox by using a local email client software, such as Outlook Express, Microsoft Outlook, Thunderbird, etc. In order to properly use it, you need...