It’s surprising how much I can reduce the amount of spam that Rspamd needs to filter – whether it ends up in my junk folder or even my inbox – just by blocking certain recipient addresses. Using unique email addresses for each service, like “deezer @ example.com” for Deezer, was one of the best decisions I made, especially combined with a catch-all address.

For example, Deezer had a data leak a few years ago, which led to a flood of spam targeting the email I used for their service. Fortunately, with Postfix, I can simply reject emails sent to that specific address, keeping my inbox much cleaner and reducing the workload for Rspamd.