Mozilla Thunderbird (email client)

www.mozillamessaging.com/thunderbird/

Personally, I think the days of desktop email software are coming to an end, email web applications are getting better and better and don’t tie your mails to a single computer. However that system really only works well if you have to monitor one or two email addresses. Since I have several email accounts that I need to monitor I need an email reader that shows them all.

Thunderbird does this quite well. It’s not as smooth and refined as I would like, but it is still the best for this purpose, even when compared to commercial software like Outlook.

Second choice: Microsoft Outlook