
Mozilla has announced it will be stopping development of Thunderbird email client because "continued innovation in Thunderbird is not a priority for Mozilla's product efforts." The company has been rapidly pushing out new versions of Thunderbird lately, including version 13 just one month ago.
On November 20th Mozilla plans to release one more version, bringing complete feature parity to both it and the Thunderbird ESR (Extended Support Release) version. Both branches will receive security updates every six weeks thereafter for the duration of the ESR lifecycle, which is currently capped at one year. The developer community at large will be able to participate in further development of Thunderbird moving forward, however, with Mozilla pledging to provide resources for said efforts.
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