POPFile might be a bit more popular than SpamSieve. We know about 3 links to it since March 2021 and only 3 links to SpamSieve. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I’ve been using SpamSieve on my Mac, both on the Mail app on my user account and on Outlook on my wife’s. Source: about 1 year ago
However, to answer the question, there is a third party spam filtering app for MacOS called SpamSieve that does a great job of filtering spam from "ham" (e.g., good mail.) I use it for the ISP mail account that my wife and I share in order to keep us from going insane from the amount of spam that goes to that account - I have a Mac that runs 24/7 running Mail with spamsieve. Source: over 1 year ago
This is just a total workaround, but check out SpamSieve: https://c-command.com/spamsieve/. When I used Mail full time, I found its spam filtering to be pretty effective. Source: over 1 year ago
Use the old popfile software. It's a bit janky and hasn't been updated in years, so it might be a pain to get working. That said it may just be the greatest IMAP Bayesian filter based email organizational tool ever made. It can learn how you organize emails based on ANY folder, not just spam and contrary to it's name it does has an IMAP module. I used to have this running on my old cubietruck (once a beefy... Source: almost 2 years ago
I am. And yes, I did create POPFile (https://getpopfile.org/). And yes, I do work for Cloudflare, been there a while... https://blog.jgc.org/2012/02/programmer.html. - Source: Hacker News / about 2 years ago
Paul Graham proceeded to develop an open source filtering application called PopFile based on this document. I've been using Popfile since forever to filter my spam. https://getpopfile.org/. - Source: Hacker News / over 2 years ago
SpamAssassin - Use this program to "Unspam" your mailbox(es).
Spamihilator - The free Anti-Spam-Filter Spamihilator removes more than 98% of spam mails before they even get into your inbox.
Mailwasher - Over 8 million people use MailWasher as their spam filter
SPAMfighter - SPAMfighter and Microsoft have built the strongest and most effective anti spam filter for Outlook, Windows Live Mail, Outlook Express & Thunderbird
Spam Reader - Spam Reader is a free anti-spam add-on for Microsoft Outlook.
Crypton.sh - SMS - Secure Anonymous SMS in the cloud (and a phone number)