Earlier quoted context omitted.
> 3. Invest more in Thunderbird the application and develop Thunderbird the privacy focus email service for independent professionals and small businesses. While I agree that Thunderbird as a standalone Windows/MacOS/Linux desktop email client is a very important project, and needs to be continued, maintained and refined, the paradigm of email has moved on somewhat since 2003. People need to be able to do more than j…
> a fully open source GPL licensed, self-hostable, webmail server application that fulfills the same functions as rainloop or roundcube, implemented in the Thunderbird name. Maybe it could have its own new GUI to run inside the browser, or it could offer an optional "traditional" GUI that is similar to the Thunderbird desktop client. This has a possibility for a natural symbiotic relationship with Firefox, as the bes…
You should definitely check out mutt for this.