Mozilla recently confirms that they have plan to “dump” Thunderbird and concentrate more on Firefox development.
Thunderbird is a free email client since 2003. Back in the days, other than MS Outlook there are not many choices for an email client. Thunderbird happens to be the best alternative and has a large and loyal following.
“Many inside of Mozilla, including an overwhelming majority of our leadership, feel the need to be laser-focused on activities like Firefox that can have an industry-wide impact,” Baker wrote. “With all due respect to Thunderbird and the Thunderbird community, we have been clear for years that we do not view Thunderbird as having this sort of potential. Given this, it’s clear to me that sooner or later paying a tax to support Thunderbird will not make sense as a policy for Mozilla.”
“I believe Thunderbird should would thrive best by separating itself from reliance on Mozilla development systems and in some cases, Mozilla technology,” Baker wrote. “The current setting isn’t stable, and we should start actively looking into how we can transition in an orderly way to a future where Thunderbird and Firefox are un-coupled. I don’t know what this will look like, or how it will work yet. I do know that it needs to happen, for both Firefox and Thunderbird’s sake.”