How to defend against junk mail in modern times
For those who do not allow their mails being read by a large cloud provider, fighting junk mail is an endless task. And, many people developed various – sometimes really clever – techniques to mitigate it. Though, current spam filters are typically time-consuming to configure, consume immense resources (or deliberatly do not use all available information), and are complex in maintenance.
This text is about Sisyphus, a novel filter that automatically learns all (!) your mails’ content to effectively fight off junk, is easy to deploy (one binary), and just needs one line of config, the location of your mail directory.