Off the top of my head, that sounds just like Mailpile[0]. There's obviously many other less recognizable solutions. https://github.com/tonioo/modoboa https://g

Off the top of my head, that sounds just like Mailpile[0]. There's obviously many other less recognizable solutions. https://github.com/tonioo/modoboa https://github.com/tonioo/modoboa sounds pretty similar. Lots of players in the modular Linux "apps" and server space. For developers, there are Docker images, OVF virtual appliances, things of that sort. From more of a user perspective, there's sandstorm.io. I believe Mailpile was even on the Sandstorm app list at some point, not sure if it still is. [0]: https://www.mailpile.is/ https://www.mailpile.is/