Never used it for a free-based client like that. However, you need to have POP or IMAP access through the provider. I don't believe Yahoo offers that for free, but hotmail MAY. If you can get it to work in Outlook, take a look at the server address [POP or IMAP, and SMTP]. I have Thunderbird working with my G-Mail account, though. But they offer POP and SMTP access. A lot of free-based clients don't want you to have POP access, because they are ad-based, and you don't see ads in your e-mail client [well, at least you shouldn't. Unless you have a shareware program, but that isn't through your email provider].