Some significant changes are coming to Thunderbird. Mozilla revived the free and open-source email client a few years ago and now is preparing to launch a new set of ”Pro” add-on web services designed enhance the experience of using Thunderbird. One of these additions will be the Thundermail email service.
In 2023, Mozilla developers announced they were ”remaking” Thunderbird’ssoftware architecture, aiming to modernize its crumbling and unsustainable codebase. The company later confirmed plans to add new paid professional features available to all Thunderbird users.
Källa: Mozilla is working on new Thunderbird ”Pro” email offerings and Thundermail