Eudora, an email client that has lasted through the ages, has long either being an ad-supported program or a pay program. Qualcomm, the company who owns it, doesn't want to continue developing the software, and as such is handing over development to the Mozilla Foundation. That's right, the developers of Thunderbird will now be getting the program in its entirety, and we are expected to see an open-source version of the client be released sometime next year. According to the article, their intention is to merge Eudora and Thunderbird to have them share a common code base, so we may soon see a huge expansion of what Thunderbird is capable of.