Spam is a non-issue in 2022. Also in 2012. The available solutions all work extremely well, from rspamd to Gmail, and have for many years. We can thank Paul Graham for popularizing the solution, in fact. Thanks Paul!
The only real issue for email today is deliverability. That's getting worse, according to reports from people who have not had a stable verified public IP address for decades.
The only real issue for email today is deliverability. That's getting worse, according to reports from people who have not had a stable verified public IP address for decades.